Hi , when burning an audio disc the files are saved to disk as .cda format and not mp3. the discs will not play back on any cd player or even in winamp. winamp shows all the tracks and plays as if they were there but no sound comes out. i also tried to burn an .ISO as a cd image but that came out as .cda too .. i have tried on Nero 5.5.10 , Adaptec easy CD creator 4 and Roxio Easy CD creator 5 Platinum , the results are always the same . never had this problem before .