Greetings!

Have you had any trouble with the CDs you burned from Audible? Every test one I have done has what sounds like track sync problems with the last few tracks on the disk. Thus my quest for finding a way that didn't involve creating coasters...

I don't think you start running into trouble with MP3 cross platform until you get below the 96kbps range. I strongly recommend CBR in this case, again for compatability only. I assume you are already converting to mono as well.