You would think that, but after I restarted the keyboard,
I played the same MP3 a few times and it worked without any problems. The source of the MP3 is super quality and I have
played many wav/mp3 files in this unit without any probelms.

I suspect this is a hard drive problem. In any event I emailed tech support at Yamaha to see what they suggest. There answer most likely will be to reformat since it can not defrag itself only by formatting. Not to happy about this.

Once I get an answer I will post it here.

Walt