I-Tunes

hey everyone. I was just wondering if anyone could help me with a little problem. I've been using Limewire for over a year now, in conjunction with I-Tunes. I updated both with the latest versions of Limewire basic and I-Tunes. However, now when I drag and drop music from Limewire into I-Tunes, nothing happens. It has always worked in the past, then just stoped when I updated both programs. what could be the problem and how can i fix it? any help is greatly appreciated!

I'm new to this, but I use both programs mentioned. I need to go to my music file ( in my documents) my docs/ my music/ itunes/ itunes music. I play the song from there, then it appears in I tunes.