Ipod cant find music

My ipod suddenly won't find my music. I-tunes still has it all, but the computer now won't "mount ipod". The ipod memory shows that there are files still on it. Reset does not help. Last time I ran the battery down, then recharged it and the music appeared again. Next time I turned it on, the music was gone again. any suggestions?

HI and Welcome to Apple Discussions...
*"I went to computer to recover and cant find them on my library or playlist,"*
Your purchased iTunes music should be in the iTunes window ????
Connect your iPod to your computer. It should launch iTunes for you. Then from the iTunes Menu Bar, click File / Sync iPod
If you don't see your iTunes purchased music in the iTunes window, try My Documents/My Music/iTunes.
Message was edited by: Carolyn Samit