Trouble with importing MP3s into flash

Hi. I’m making a presentation flash movie with voice playback. I’m using the free sound recorder “audacity”. The problem I’m having is that Flash refuses to import some of the sounds that I export from audacity. I get a “Flash does not recognize the file format of “blah.mp3” would you like to try to import it with Quicktime”

It didn’t do this just yesterday…the only think I can think of is that I messed with the settings in audacity, of which there are a lot.

Could someone tell me exacly what flash is looking for in an mp3? mhz and bitrates and what not? Does anyone know of a utility that will strip away all but the essentials from an mp3?

Thanks,

pseudo