Not sure which is the proper thread for PT.

I just tested v0.3 and the ringer is not using any tone that I enter. When I receive a call, it just vibrates using the standard treo vibrate (2 short, 1 long, It seems that it does not turn off the regular POS preferences phone vibrate mode) with no ringer sound (and no, the silence ringer button on top is not in silence mode).

tone - quick ring
Play 1
Init vol 3
vibrate 0
set led leave
repeat 1
silent for 0
vol increase yes

Haven't tried MP3's or Midi.