Q: my ipod touch has grey songs that dont play and wont let me delete them how do I delete them

Hello ftmally

You can delete from the Usage section in Settings. Go to Settings > General > Usage, then just tap Music and you will see a delete button and that will take care of it. 

Understanding capacity on iPhone, iPad, and iPod

http://support.apple.com/kb/HT1867

Thanks for using Apple Support Communities.

Regards,

-Norm G.