what format are you converting FROM? BitPim may not have proper codecs to convert some files.
NOW... here's the COOL thing you can do with BitPim if you have a file which is already ready to go:
when you go to click on the "add ringer" button like you did to get to the converter application, HOLD the SHIFT button. (SHIFT+click on the "add ringer button") this will totally bypass the audio converter, and place the ringer in the list so that you can then click on the sync to phone button.
Linear Mode
