I'm about to upload a custom track for the 4th time to Prime. My other attempts said successful but I didn't get an email and it never showed in my Prime. I've logged out, logged in, made sure I only have 18 tracks, made sure the file isn't too big.. with no success. I've uploaded several others with no problems. The tracks are m4a.. that ok? The unzipped folder is only 297 mb.. In rehearsal tonight we had to skip over to another computer to run that one song.. I know this has been mentioned before.. what's the solution? HELP! Sunday is tomorrow!