Have you tried it since the One Synth Challenge last year? Several bugsbrok landers wrote:if that thing would't be so damned buggy, it would've come quite far...
were squashed during that contest.
http://www.murga-linux.com/puppy/viewtopic.php?t=72402
The linux version, part of the linux at the link,
has never seemed buggy in normal use
(not having attempted deep Bigtone creation/editing)
The (400 meg iso) preconfigured linux studio above, includes it,
as well as a drum machine (hydrogen) and Rakarrack multi-fx, with
timemachine, ardour, and audacity for recording/editing.
Yoshimi is a newer fork, that also has lots of improvements.
Cheers