Ipod Problem

I'm having problems with my Ipod Nano, which I recieved for my birthday. It worked fine and dandy when I first got it, however the trouble began after I downloaded my music onto it. For some reason, not even two minutes into a song the Ipod just randomly shuts it's self down. I have to keep on push the hold key and the two restarting buttons. I have asked people who have Ipods if they have ever heard of this happening before and they have all replied "no." I also asked if Ipods could manage to recieve viruses from songs that were downloaded. Still I got the same answers or " I don't know."
The funny thing is that people have told me to charge the battery, and I tell them that my Ipod shuts it's self down even when the battery is charged all the way. This is a tricky one for me, I am lost. So can somebody please be of some help and tell me of anything you know about this, or if I should just go return this piece of junk?
The funny thing is that people have told me to charge the battery, and I tell them that my Ipod shuts it's self down even when the battery is charged all the way. This is a tricky one for me, I am lost. So can somebody please be of some help and tell me of anything you know about this, or if I should just go return this piece of junk?