i have deleted my limewire music library and now my itunes songs are still there but wont play ,there is a ! next to the songs that wont play ,can somebody tell me what the go is...

Sounds like you didn't add your songs to the iTunes library before you deleted from your LW library If there's a ! next to the song, iTunes can't find the file (probably because it's been deleted).

Check out the link below for info about adding files to iTunes!
Transferring music to iPod & iTunes

thanks bro ,so i pretty much have to down load all the songs again do you reckon...

Yep, if you've deleted them from your library then possibly you'll have to redownload BUT...you could try a file recovery program, if you've only recently deleted the files. Have a look through the thread below...some people have had good results with using the Restoration program.
Deleting files from LW library - Don't!! File recovery advice