I have several MP3 files that cannot be burned as data or MP3 files. Everything is fine except when I try to burn the files, it says MP3 file cannot be opened. I tried using Roxio mp3 player but it cannot play the file. It says the file is unknown or unsupported format. I also tried this with Nero, and same problem. Windows MP seems to play it fine, also winamp does also. Has anyone ever experienced this?