I have a PM 7600 with Toast 4.1 and a Masushita CD-R that works great. I recently got some MP3 files that are 320 kbps. Toast usually has no problems reading MP3 files until I tried to load these 320 k files and they don't work. Is there an upper limit to Toast MP3 conversion, or do I need to down convert the 320 files that I have to like 256?