You see, I was downloading songs for about two to three months now and like, lately, some of the songs half done. I mean, I stopped downloading and they're not finish yet. The next few days, I noticed that the half of the song I saved was missing. It was gone for good. I didn't delete it or whatever. It just disappeared. I just want to know what I did wrong in downloading...

And another thing, why does it always show need more sources most of the time? Just wondering..

Thanks, if anyone answers..