iTunes w/ Limewire?
 

I am new LW user and new iTunes user. All of my mp3 files are in my iTunes library and I can't seem to select them to be shared on LW. How do I do this?

First you need to figure out what folder contains your iTunes music files. You can do this by selecting a song in the library and pressing command-R. The Finder will show the file in the window of the containing folder. Note what folder that is and then in LimeWire add this folder to Tools:Options:Sharing.