Thanks for posting a solution for this problem InfoCenteral. But not everybody knows how to upgrade an mp3 to mp4. perhaps you could also post on how you've managed to do such things to work with A.S. When posting a solution, don't assume that everyone will know what you mean. You risk loosing your ...

I've had the same exact issue with importing .mp3 files into AS Pro 9 64 bit/Quicktime. Importing a .mp3 wouldn't work for me on 64bit ASPro9/Quicktime. I'm on a Mac Snow Leopard 10.6.8., reinstalling Quicktime did not work for me as a fix. So I found a work around to get my .mp3 files to be accepte...