thanks for the info rodrigo.
i supposed to use bonk on a "temp" buffer then store its results in a coll or something like that to give the groove object infos on where to play the buffer. but your suggestion seems something to investigate seriously!
i'm on windows 7 so i think there are no official release of the Alex's externals for windows. Actually i think he sent me a beta windows version.
Can you describe briefly what exactly the descriptors object does?
Yikes. That's a tall order. It does an absolute ton. (all analysis stff in realtime and non realtime). I'm trying to use it to do something not too dissimilar (buffer analysis stuff), but even though the help file is pretty comprehensive it's a massively powerful/open object to get your head around.