I have been trying to find a tanpura/shruti-box simulator for the Mac (preferably one that runs on Panther) and I'm not having much luck. Anybody know what's available?

This is to go with my latest attack of instrument acquisition syndrome, an Afghan rubab.

A problem with Bontempis: they don't give you a full range of major and minor chords, and you will run out of sharp keys if you try it on Scottish music.