fix syntax error in audio.py
fix configuration import in audio.py
make gfx.py not depend on crystal.py
Merge pull request #53 from kanzure/fix-audio-syntax-error

Fix audio syntax error
Merge pull request #54 from kanzure/fix-gfx-config

Make gfx.py not depend on crystal.py
be sure to import romstr into gfx.py
fix configuration import line in map_editor.py
Merge pull request #55 from kanzure/fix-map-editor-import

Fix configuration import line in map_editor.py