In order for a regular audio cd player to recognize the disc and play it, it has to be set to aiff and 44.1khz. You're not going to be able to make a 2.5 hour file fit on a 63 minute CD. That's why MP3 was invented :) Are you sure the CD player doesn't recognize MP3 format? regards, sb On 10/21/05 9:19 PM, "Patty Winter" <patty1 at sonic.net> wrote: > Hey, thanks everyone for the very quick and helpful replies! > > One question: > >> From: sb <videovideo at mac.com> >> >> Aiff at 44.1khz stereo 16 bit is the specification for an audio cd > > I just tried that, and got a nice audio file from it. However, because > of the length of the iMovie project (nearly 2.5 hours), the resulting > audio was 1.37 GB, making it too long for an audio CD. So I need to > punt down one level. What are the quality and file-size differences > between 22.05KHz 16-bit stereo, and 44.1KHz 8-bit stereo? > > > Patty