It's released as 0.91.16.
A few notes for cps2 : music detection is still quite experimental, it seems to work, but I didn't test all the games of course, but I changed the way I was doing it already.
So the current way is on the sound command itself, songs seem to be < $100.
Usually the sound dialog was displaying only a list of songs to test, but here with cps2 the list of songs is unknown, so it allows you to type directly the number of the song to test, but it's better to go in game to the song you want first, and then open this dialog, it should point to the song currently playing.
Of course absolutely no special effects are supported, it's just bare minimum, song start / song stop when there is another one, that's all.
It's not certain it will work in all cases. For example in sfa2 the music playing on the qsound screen is actually done by 2 songs : 3e in the foreground, followed by 3f which starts just after the 1st one... In this case the dialog points to song 3f of course, I just hope there is no such case during a game but I can't be sure ! The few I tested so far seem ok !
I just realized I probably released too early, the new way to detect songs won't detect the stop song command ! Which means that if you put something looping, it will stop only if there is another association to stop it later ! Oh well, at least it's promising but I probably underestimated the complexity of the thing... The old way works better but only for games following this, and it's not all of them. So it will take some time to find something better sorry !