Revisions for sndlib for the Avigo:

0.01a - internal release. Single voice fx(), several octaves note() functions

0.01b - added sound() function and removed lfo support. Added mute(). Note can
        now play 102 different notes.

0.02b - oops, by removing lfo support, volume support was removed.
        It is now back, along with a dualtone() function. Attack, sustain
        and release now works in part on sound(). 1 major bug removed.

