won't show up in sync

My 2nd generation won't let me load any new music. When I plug it up to my computer it will charge but not be recognized in ITunes. I tried it on other computers so it's not the computer it's the shuffle. Is there a way to fix this?

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 1
crwdns2934285:0crwdne2934285:0