I received your email...
I see the problem with the submission.
reference:
viewtopic.php?f=12&t=27422&p=356420&hilit=spaces#p356420Your file has spaces in the filename that you're attempting to upload.
So when the script reads the file it stops at the first space (or break)
02 track 2.mp3
02 - it then does not read further. Since this does not have mp3 afterwards, it sends an error.
Remove the spaces:
Was: 02 track 2.mp3
New: 02track2.mp3
Hope that helps now and in the future.