I've noticed alot of people are having this problem. For some reason or another the MP3 player puts intself into INTRO MODE. The player will play ten seconds of a song then move onto the next.
To fix this:
1. Play a Song
2. Press the button on the side of the player
3. Choose PLAY MODE
4. Choose NORMAL
I had this problem when I first got mine as well and I understand how frustrating it can be when you've spent hard earned money on something and things go wrong right off the bat. When it happened to me I wished there was someone out there with a clear answer as to how I could fix it. I hope I've been able to help you with your specific problem.