Itunes Help?!?!?! pllease?

On Itunes i use lime for free. And itunes has this little thing on the side that say Brianna's limewire. It has like 400 songs and i cant download them on my ipod touch i have them checked(i dont already have them on my itouch) and i go to file them sync and thats how i used to get them on there. and they wont download and i dont know how to get them on there soo please help!!! thanks :))