https://hydrogenaud.io/index.php?topic=16613.0
https://web.archive.org/web/20031210093403/http://www.wasabi...
Seems nobody cared at the time. Never heard of a community springing up around it, and you can hardly find it now. Got it in my archives somewhere.
-dro
The source seem to have been on trac on wasabi.t0x.org:
https://web.archive.org/web/20060508052407/http://wasabi.t0x...
And this might be the same on github: https://github.com/bizzehdee/wasabi/blob/49d293042ce17b0d137...
Fair to say: doesn't look like it's related to winamp and doesn't look very complete.
Wasabi is just the toolkit. It is indeed used by Winamp. What you need to look for is Wasabi.player, as the first couple sentences in the second link I provided explains.