MOTM

I had asked about circuit design software last week, but it was buried at
the bottom of a software rant which I rather doubt that anyone would want to
read!  So I'll inquire again...  does anyone know of any cheap (free is
better) Windows or BeOS or Linux based circuit design / simulation software?
Something that might be particularily suited to audio?  I don't need
anything that does layout-- I'm not nearly to that stage-- just something
that will help a novice figure out what might work without laying down too
many rats-nests of wires first.  I've been reading a lot on distortion
circuits and Don Lancaster's Active Filter Circuits book, so I'm keen on
playing around with some.  Thanks!!

--PBr