Hi my name is ***** ***** to Just Answer. I am reviewing your question and will reply ASAP.
Do you have the latest version of iTunes installed on your computer? Is it on a Mac or a PC?
Ok, next thing is to check if the music in iTunes on the iMac plays Ok, or does the same thing as the iPod.
Can you try playing back some of the music in your iTunes. Does it play back ok?
Ok, the rest of the troubleshooting we need to do requires iTunes.
When do you think you can be next to your computer with iTunes and the iPod and continue troubleshooting?
That's Ok, please reply here when you can and I will pick it up. Please use the star rating before you log off, I would greatly appreciate it.