Suddenly, S3 only playing "sampling" of Music over wireless Network

I really need help with this. I installed the app that Dan203 made a while back for playing different music files for my S3. I use unprotected AAC files. It's worked perfectly until today!

All of a sudden it will only play a sampling of a song and move to the next tune and do the same. It shows the proper time for each song, and the files play fine on my computer.

Suggestions, help greatly appreciated.