diff --git a/data/.gitattributes b/data/.gitattributes
index d5d87d4f267964edefaeb76c652936e58d92beac..a5e54b82d9cb4ab8d05e3233b1242bf539a4a8f0 100644
--- a/data/.gitattributes
+++ b/data/.gitattributes
@@ -48,3 +48,4 @@ it filter=lfs diff=lfs merge=lfs -text
 mn filter=lfs diff=lfs merge=lfs -text
 rm-vallader filter=lfs diff=lfs merge=lfs -text
 tt filter=lfs diff=lfs merge=lfs -text
+opus/ filter=lfs diff=lfs merge=lfs -text
diff --git a/data/ar/dev/audio/0.tar.gz b/data/opus/ar/dev/audio/0.tar.gz
similarity index 100%
rename from data/ar/dev/audio/0.tar.gz
rename to data/opus/ar/dev/audio/0.tar.gz
diff --git a/data/ar/dev/n_files.txt b/data/opus/ar/dev/n_files.txt
similarity index 100%
rename from data/ar/dev/n_files.txt
rename to data/opus/ar/dev/n_files.txt
diff --git a/data/ar/splits.tar.gz b/data/opus/ar/splits.tar.gz
similarity index 100%
rename from data/ar/splits.tar.gz
rename to data/opus/ar/splits.tar.gz
diff --git a/data/ar/test/audio/0.tar.gz b/data/opus/ar/test/audio/0.tar.gz
similarity index 100%
rename from data/ar/test/audio/0.tar.gz
rename to data/opus/ar/test/audio/0.tar.gz
diff --git a/data/ar/test/n_files.txt b/data/opus/ar/test/n_files.txt
similarity index 100%
rename from data/ar/test/n_files.txt
rename to data/opus/ar/test/n_files.txt
diff --git a/data/ar/train/audio/0.tar.gz b/data/opus/ar/train/audio/0.tar.gz
similarity index 100%
rename from data/ar/train/audio/0.tar.gz
rename to data/opus/ar/train/audio/0.tar.gz
diff --git a/data/ar/train/n_files.txt b/data/opus/ar/train/n_files.txt
similarity index 100%
rename from data/ar/train/n_files.txt
rename to data/opus/ar/train/n_files.txt
diff --git a/data/as/dev/audio/0.tar.gz b/data/opus/as/dev/audio/0.tar.gz
similarity index 100%
rename from data/as/dev/audio/0.tar.gz
rename to data/opus/as/dev/audio/0.tar.gz
diff --git a/data/as/dev/n_files.txt b/data/opus/as/dev/n_files.txt
similarity index 100%
rename from data/as/dev/n_files.txt
rename to data/opus/as/dev/n_files.txt
diff --git a/data/as/splits.tar.gz b/data/opus/as/splits.tar.gz
similarity index 100%
rename from data/as/splits.tar.gz
rename to data/opus/as/splits.tar.gz
diff --git a/data/as/test/audio/0.tar.gz b/data/opus/as/test/audio/0.tar.gz
similarity index 100%
rename from data/as/test/audio/0.tar.gz
rename to data/opus/as/test/audio/0.tar.gz
diff --git a/data/as/test/n_files.txt b/data/opus/as/test/n_files.txt
similarity index 100%
rename from data/as/test/n_files.txt
rename to data/opus/as/test/n_files.txt
diff --git a/data/as/train/audio/0.tar.gz b/data/opus/as/train/audio/0.tar.gz
similarity index 100%
rename from data/as/train/audio/0.tar.gz
rename to data/opus/as/train/audio/0.tar.gz
diff --git a/data/as/train/n_files.txt b/data/opus/as/train/n_files.txt
similarity index 100%
rename from data/as/train/n_files.txt
rename to data/opus/as/train/n_files.txt
diff --git a/data/br/dev/audio/0.tar.gz b/data/opus/br/dev/audio/0.tar.gz
similarity index 100%
rename from data/br/dev/audio/0.tar.gz
rename to data/opus/br/dev/audio/0.tar.gz
diff --git a/data/br/dev/n_files.txt b/data/opus/br/dev/n_files.txt
similarity index 100%
rename from data/br/dev/n_files.txt
rename to data/opus/br/dev/n_files.txt
diff --git a/data/br/splits.tar.gz b/data/opus/br/splits.tar.gz
similarity index 100%
rename from data/br/splits.tar.gz
rename to data/opus/br/splits.tar.gz
diff --git a/data/br/test/audio/0.tar.gz b/data/opus/br/test/audio/0.tar.gz
similarity index 100%
rename from data/br/test/audio/0.tar.gz
rename to data/opus/br/test/audio/0.tar.gz
diff --git a/data/br/test/n_files.txt b/data/opus/br/test/n_files.txt
similarity index 100%
rename from data/br/test/n_files.txt
rename to data/opus/br/test/n_files.txt
diff --git a/data/br/train/audio/0.tar.gz b/data/opus/br/train/audio/0.tar.gz
similarity index 100%
rename from data/br/train/audio/0.tar.gz
rename to data/opus/br/train/audio/0.tar.gz
diff --git a/data/br/train/n_files.txt b/data/opus/br/train/n_files.txt
similarity index 100%
rename from data/br/train/n_files.txt
rename to data/opus/br/train/n_files.txt
diff --git a/data/ca/dev/audio/0.tar.gz b/data/opus/ca/dev/audio/0.tar.gz
similarity index 100%
rename from data/ca/dev/audio/0.tar.gz
rename to data/opus/ca/dev/audio/0.tar.gz
diff --git a/data/ca/dev/audio/1.tar.gz b/data/opus/ca/dev/audio/1.tar.gz
similarity index 100%
rename from data/ca/dev/audio/1.tar.gz
rename to data/opus/ca/dev/audio/1.tar.gz
diff --git a/data/ca/dev/audio/2.tar.gz b/data/opus/ca/dev/audio/2.tar.gz
similarity index 100%
rename from data/ca/dev/audio/2.tar.gz
rename to data/opus/ca/dev/audio/2.tar.gz
diff --git a/data/ca/dev/audio/3.tar.gz b/data/opus/ca/dev/audio/3.tar.gz
similarity index 100%
rename from data/ca/dev/audio/3.tar.gz
rename to data/opus/ca/dev/audio/3.tar.gz
diff --git a/data/ca/dev/n_files.txt b/data/opus/ca/dev/n_files.txt
similarity index 100%
rename from data/ca/dev/n_files.txt
rename to data/opus/ca/dev/n_files.txt
diff --git a/data/ca/splits.tar.gz b/data/opus/ca/splits.tar.gz
similarity index 100%
rename from data/ca/splits.tar.gz
rename to data/opus/ca/splits.tar.gz
diff --git a/data/ca/test/audio/0.tar.gz b/data/opus/ca/test/audio/0.tar.gz
similarity index 100%
rename from data/ca/test/audio/0.tar.gz
rename to data/opus/ca/test/audio/0.tar.gz
diff --git a/data/ca/test/audio/1.tar.gz b/data/opus/ca/test/audio/1.tar.gz
similarity index 100%
rename from data/ca/test/audio/1.tar.gz
rename to data/opus/ca/test/audio/1.tar.gz
diff --git a/data/ca/test/audio/2.tar.gz b/data/opus/ca/test/audio/2.tar.gz
similarity index 100%
rename from data/ca/test/audio/2.tar.gz
rename to data/opus/ca/test/audio/2.tar.gz
diff --git a/data/ca/test/audio/3.tar.gz b/data/opus/ca/test/audio/3.tar.gz
similarity index 100%
rename from data/ca/test/audio/3.tar.gz
rename to data/opus/ca/test/audio/3.tar.gz
diff --git a/data/ca/test/n_files.txt b/data/opus/ca/test/n_files.txt
similarity index 100%
rename from data/ca/test/n_files.txt
rename to data/opus/ca/test/n_files.txt
diff --git a/data/ca/train/audio/0.tar.gz b/data/opus/ca/train/audio/0.tar.gz
similarity index 100%
rename from data/ca/train/audio/0.tar.gz
rename to data/opus/ca/train/audio/0.tar.gz
diff --git a/data/ca/train/audio/1.tar.gz b/data/opus/ca/train/audio/1.tar.gz
similarity index 100%
rename from data/ca/train/audio/1.tar.gz
rename to data/opus/ca/train/audio/1.tar.gz
diff --git a/data/ca/train/audio/10.tar.gz b/data/opus/ca/train/audio/10.tar.gz
similarity index 100%
rename from data/ca/train/audio/10.tar.gz
rename to data/opus/ca/train/audio/10.tar.gz
diff --git a/data/ca/train/audio/11.tar.gz b/data/opus/ca/train/audio/11.tar.gz
similarity index 100%
rename from data/ca/train/audio/11.tar.gz
rename to data/opus/ca/train/audio/11.tar.gz
diff --git a/data/ca/train/audio/12.tar.gz b/data/opus/ca/train/audio/12.tar.gz
similarity index 100%
rename from data/ca/train/audio/12.tar.gz
rename to data/opus/ca/train/audio/12.tar.gz
diff --git a/data/ca/train/audio/13.tar.gz b/data/opus/ca/train/audio/13.tar.gz
similarity index 100%
rename from data/ca/train/audio/13.tar.gz
rename to data/opus/ca/train/audio/13.tar.gz
diff --git a/data/ca/train/audio/14.tar.gz b/data/opus/ca/train/audio/14.tar.gz
similarity index 100%
rename from data/ca/train/audio/14.tar.gz
rename to data/opus/ca/train/audio/14.tar.gz
diff --git a/data/ca/train/audio/15.tar.gz b/data/opus/ca/train/audio/15.tar.gz
similarity index 100%
rename from data/ca/train/audio/15.tar.gz
rename to data/opus/ca/train/audio/15.tar.gz
diff --git a/data/ca/train/audio/16.tar.gz b/data/opus/ca/train/audio/16.tar.gz
similarity index 100%
rename from data/ca/train/audio/16.tar.gz
rename to data/opus/ca/train/audio/16.tar.gz
diff --git a/data/ca/train/audio/17.tar.gz b/data/opus/ca/train/audio/17.tar.gz
similarity index 100%
rename from data/ca/train/audio/17.tar.gz
rename to data/opus/ca/train/audio/17.tar.gz
diff --git a/data/ca/train/audio/18.tar.gz b/data/opus/ca/train/audio/18.tar.gz
similarity index 100%
rename from data/ca/train/audio/18.tar.gz
rename to data/opus/ca/train/audio/18.tar.gz
diff --git a/data/ca/train/audio/19.tar.gz b/data/opus/ca/train/audio/19.tar.gz
similarity index 100%
rename from data/ca/train/audio/19.tar.gz
rename to data/opus/ca/train/audio/19.tar.gz
diff --git a/data/ca/train/audio/2.tar.gz b/data/opus/ca/train/audio/2.tar.gz
similarity index 100%
rename from data/ca/train/audio/2.tar.gz
rename to data/opus/ca/train/audio/2.tar.gz
diff --git a/data/ca/train/audio/20.tar.gz b/data/opus/ca/train/audio/20.tar.gz
similarity index 100%
rename from data/ca/train/audio/20.tar.gz
rename to data/opus/ca/train/audio/20.tar.gz
diff --git a/data/ca/train/audio/21.tar.gz b/data/opus/ca/train/audio/21.tar.gz
similarity index 100%
rename from data/ca/train/audio/21.tar.gz
rename to data/opus/ca/train/audio/21.tar.gz
diff --git a/data/ca/train/audio/22.tar.gz b/data/opus/ca/train/audio/22.tar.gz
similarity index 100%
rename from data/ca/train/audio/22.tar.gz
rename to data/opus/ca/train/audio/22.tar.gz
diff --git a/data/ca/train/audio/23.tar.gz b/data/opus/ca/train/audio/23.tar.gz
similarity index 100%
rename from data/ca/train/audio/23.tar.gz
rename to data/opus/ca/train/audio/23.tar.gz
diff --git a/data/ca/train/audio/24.tar.gz b/data/opus/ca/train/audio/24.tar.gz
similarity index 100%
rename from data/ca/train/audio/24.tar.gz
rename to data/opus/ca/train/audio/24.tar.gz
diff --git a/data/ca/train/audio/25.tar.gz b/data/opus/ca/train/audio/25.tar.gz
similarity index 100%
rename from data/ca/train/audio/25.tar.gz
rename to data/opus/ca/train/audio/25.tar.gz
diff --git a/data/ca/train/audio/26.tar.gz b/data/opus/ca/train/audio/26.tar.gz
similarity index 100%
rename from data/ca/train/audio/26.tar.gz
rename to data/opus/ca/train/audio/26.tar.gz
diff --git a/data/ca/train/audio/27.tar.gz b/data/opus/ca/train/audio/27.tar.gz
similarity index 100%
rename from data/ca/train/audio/27.tar.gz
rename to data/opus/ca/train/audio/27.tar.gz
diff --git a/data/ca/train/audio/3.tar.gz b/data/opus/ca/train/audio/3.tar.gz
similarity index 100%
rename from data/ca/train/audio/3.tar.gz
rename to data/opus/ca/train/audio/3.tar.gz
diff --git a/data/ca/train/audio/4.tar.gz b/data/opus/ca/train/audio/4.tar.gz
similarity index 100%
rename from data/ca/train/audio/4.tar.gz
rename to data/opus/ca/train/audio/4.tar.gz
diff --git a/data/ca/train/audio/5.tar.gz b/data/opus/ca/train/audio/5.tar.gz
similarity index 100%
rename from data/ca/train/audio/5.tar.gz
rename to data/opus/ca/train/audio/5.tar.gz
diff --git a/data/ca/train/audio/6.tar.gz b/data/opus/ca/train/audio/6.tar.gz
similarity index 100%
rename from data/ca/train/audio/6.tar.gz
rename to data/opus/ca/train/audio/6.tar.gz
diff --git a/data/ca/train/audio/7.tar.gz b/data/opus/ca/train/audio/7.tar.gz
similarity index 100%
rename from data/ca/train/audio/7.tar.gz
rename to data/opus/ca/train/audio/7.tar.gz
diff --git a/data/ca/train/audio/8.tar.gz b/data/opus/ca/train/audio/8.tar.gz
similarity index 100%
rename from data/ca/train/audio/8.tar.gz
rename to data/opus/ca/train/audio/8.tar.gz
diff --git a/data/ca/train/audio/9.tar.gz b/data/opus/ca/train/audio/9.tar.gz
similarity index 100%
rename from data/ca/train/audio/9.tar.gz
rename to data/opus/ca/train/audio/9.tar.gz
diff --git a/data/ca/train/n_files.txt b/data/opus/ca/train/n_files.txt
similarity index 100%
rename from data/ca/train/n_files.txt
rename to data/opus/ca/train/n_files.txt
diff --git a/data/cnh/dev/audio/0.tar.gz b/data/opus/cnh/dev/audio/0.tar.gz
similarity index 100%
rename from data/cnh/dev/audio/0.tar.gz
rename to data/opus/cnh/dev/audio/0.tar.gz
diff --git a/data/cnh/dev/n_files.txt b/data/opus/cnh/dev/n_files.txt
similarity index 100%
rename from data/cnh/dev/n_files.txt
rename to data/opus/cnh/dev/n_files.txt
diff --git a/data/cnh/splits.tar.gz b/data/opus/cnh/splits.tar.gz
similarity index 100%
rename from data/cnh/splits.tar.gz
rename to data/opus/cnh/splits.tar.gz
diff --git a/data/cnh/test/audio/0.tar.gz b/data/opus/cnh/test/audio/0.tar.gz
similarity index 100%
rename from data/cnh/test/audio/0.tar.gz
rename to data/opus/cnh/test/audio/0.tar.gz
diff --git a/data/cnh/test/n_files.txt b/data/opus/cnh/test/n_files.txt
similarity index 100%
rename from data/cnh/test/n_files.txt
rename to data/opus/cnh/test/n_files.txt
diff --git a/data/cnh/train/audio/0.tar.gz b/data/opus/cnh/train/audio/0.tar.gz
similarity index 100%
rename from data/cnh/train/audio/0.tar.gz
rename to data/opus/cnh/train/audio/0.tar.gz
diff --git a/data/cnh/train/n_files.txt b/data/opus/cnh/train/n_files.txt
similarity index 100%
rename from data/cnh/train/n_files.txt
rename to data/opus/cnh/train/n_files.txt
diff --git a/data/cs/dev/audio/0.tar.gz b/data/opus/cs/dev/audio/0.tar.gz
similarity index 100%
rename from data/cs/dev/audio/0.tar.gz
rename to data/opus/cs/dev/audio/0.tar.gz
diff --git a/data/cs/dev/n_files.txt b/data/opus/cs/dev/n_files.txt
similarity index 100%
rename from data/cs/dev/n_files.txt
rename to data/opus/cs/dev/n_files.txt
diff --git a/data/cs/splits.tar.gz b/data/opus/cs/splits.tar.gz
similarity index 100%
rename from data/cs/splits.tar.gz
rename to data/opus/cs/splits.tar.gz
diff --git a/data/cs/test/audio/0.tar.gz b/data/opus/cs/test/audio/0.tar.gz
similarity index 100%
rename from data/cs/test/audio/0.tar.gz
rename to data/opus/cs/test/audio/0.tar.gz
diff --git a/data/cs/test/n_files.txt b/data/opus/cs/test/n_files.txt
similarity index 100%
rename from data/cs/test/n_files.txt
rename to data/opus/cs/test/n_files.txt
diff --git a/data/cs/train/audio/0.tar.gz b/data/opus/cs/train/audio/0.tar.gz
similarity index 100%
rename from data/cs/train/audio/0.tar.gz
rename to data/opus/cs/train/audio/0.tar.gz
diff --git a/data/cs/train/audio/1.tar.gz b/data/opus/cs/train/audio/1.tar.gz
similarity index 100%
rename from data/cs/train/audio/1.tar.gz
rename to data/opus/cs/train/audio/1.tar.gz
diff --git a/data/cs/train/n_files.txt b/data/opus/cs/train/n_files.txt
similarity index 100%
rename from data/cs/train/n_files.txt
rename to data/opus/cs/train/n_files.txt
diff --git a/data/cv/dev/audio/0.tar.gz b/data/opus/cv/dev/audio/0.tar.gz
similarity index 100%
rename from data/cv/dev/audio/0.tar.gz
rename to data/opus/cv/dev/audio/0.tar.gz
diff --git a/data/cv/dev/n_files.txt b/data/opus/cv/dev/n_files.txt
similarity index 100%
rename from data/cv/dev/n_files.txt
rename to data/opus/cv/dev/n_files.txt
diff --git a/data/cv/splits.tar.gz b/data/opus/cv/splits.tar.gz
similarity index 100%
rename from data/cv/splits.tar.gz
rename to data/opus/cv/splits.tar.gz
diff --git a/data/cv/test/audio/0.tar.gz b/data/opus/cv/test/audio/0.tar.gz
similarity index 100%
rename from data/cv/test/audio/0.tar.gz
rename to data/opus/cv/test/audio/0.tar.gz
diff --git a/data/cv/test/n_files.txt b/data/opus/cv/test/n_files.txt
similarity index 100%
rename from data/cv/test/n_files.txt
rename to data/opus/cv/test/n_files.txt
diff --git a/data/cv/train/audio/0.tar.gz b/data/opus/cv/train/audio/0.tar.gz
similarity index 100%
rename from data/cv/train/audio/0.tar.gz
rename to data/opus/cv/train/audio/0.tar.gz
diff --git a/data/cv/train/n_files.txt b/data/opus/cv/train/n_files.txt
similarity index 100%
rename from data/cv/train/n_files.txt
rename to data/opus/cv/train/n_files.txt
diff --git a/data/cy/dev/audio/0.tar.gz b/data/opus/cy/dev/audio/0.tar.gz
similarity index 100%
rename from data/cy/dev/audio/0.tar.gz
rename to data/opus/cy/dev/audio/0.tar.gz
diff --git a/data/cy/dev/n_files.txt b/data/opus/cy/dev/n_files.txt
similarity index 100%
rename from data/cy/dev/n_files.txt
rename to data/opus/cy/dev/n_files.txt
diff --git a/data/cy/splits.tar.gz b/data/opus/cy/splits.tar.gz
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rename from data/cy/splits.tar.gz
rename to data/opus/cy/splits.tar.gz
diff --git a/data/cy/test/audio/0.tar.gz b/data/opus/cy/test/audio/0.tar.gz
similarity index 100%
rename from data/cy/test/audio/0.tar.gz
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diff --git a/data/cy/test/n_files.txt b/data/opus/cy/test/n_files.txt
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rename from data/cy/test/n_files.txt
rename to data/opus/cy/test/n_files.txt
diff --git a/data/cy/train/audio/0.tar.gz b/data/opus/cy/train/audio/0.tar.gz
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rename from data/cy/train/audio/0.tar.gz
rename to data/opus/cy/train/audio/0.tar.gz
diff --git a/data/cy/train/audio/1.tar.gz b/data/opus/cy/train/audio/1.tar.gz
similarity index 100%
rename from data/cy/train/audio/1.tar.gz
rename to data/opus/cy/train/audio/1.tar.gz
diff --git a/data/cy/train/audio/2.tar.gz b/data/opus/cy/train/audio/2.tar.gz
similarity index 100%
rename from data/cy/train/audio/2.tar.gz
rename to data/opus/cy/train/audio/2.tar.gz
diff --git a/data/cy/train/audio/3.tar.gz b/data/opus/cy/train/audio/3.tar.gz
similarity index 100%
rename from data/cy/train/audio/3.tar.gz
rename to data/opus/cy/train/audio/3.tar.gz
diff --git a/data/cy/train/audio/4.tar.gz b/data/opus/cy/train/audio/4.tar.gz
similarity index 100%
rename from data/cy/train/audio/4.tar.gz
rename to data/opus/cy/train/audio/4.tar.gz
diff --git a/data/cy/train/n_files.txt b/data/opus/cy/train/n_files.txt
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rename from data/cy/train/n_files.txt
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diff --git a/data/de/dev/audio/0.tar.gz b/data/opus/de/dev/audio/0.tar.gz
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rename from data/de/dev/audio/0.tar.gz
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diff --git a/data/de/dev/audio/1.tar.gz b/data/opus/de/dev/audio/1.tar.gz
similarity index 100%
rename from data/de/dev/audio/1.tar.gz
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diff --git a/data/de/dev/audio/2.tar.gz b/data/opus/de/dev/audio/2.tar.gz
similarity index 100%
rename from data/de/dev/audio/2.tar.gz
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diff --git a/data/de/dev/audio/3.tar.gz b/data/opus/de/dev/audio/3.tar.gz
similarity index 100%
rename from data/de/dev/audio/3.tar.gz
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diff --git a/data/de/dev/audio/4.tar.gz b/data/opus/de/dev/audio/4.tar.gz
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rename from data/de/dev/audio/4.tar.gz
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diff --git a/data/de/dev/audio/5.tar.gz b/data/opus/de/dev/audio/5.tar.gz
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rename from data/de/dev/audio/5.tar.gz
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