I use limewire..and I stopped sharing files, and now the color of the name...

[John S]

...of the songs are red? instead of black

 

[(a.n.d.r.e.w.)]

That means they were moved. Try hitting the 'explore' button in the library tab and see if the files are still there. If they turn red, it means they are in a different location, or you tried to move them or delete them while they were in use.