iTunes Halp.

I need some help with iTunes...

I had went to my brothers house, and he added some of his songs on to my iPod, so when I came back home I bought a song, when it synced it backed up my iPodand all my songs were gone. (Except the one I had bought) So I went to the iTunes Library and added my songs again. (My brothers songs were gone.) And now when I buy a new song on my iPod, it doesn't show up on the iTunes Libary when I sync my iPod. :\ I wanna know how to get the songs I bought on my iPodon the iTunesLibrary...

I'm not exactly sure what you're asking. If you want to put a song in your library, you can go to File>Add File to Library.