I used the following script to test new tracks:
````
s = playlist(id="playlist","~/Music")
s = skip_blank(max_blank=5.,threshold=0.,s)
s = sleeper(delay=1.2,s)
s = mksafe(s)
s = output.dummy(s)
s = buffer.adaptative(averaging=1.,s)
s = mksafe(s)
out(s)
````
And after a few tracks, I had requests to fill frames with negative `Frame.position`, which I don't think is really related to our operator... So I just worked around...