Ok, H E L P!

Whenever I download a song it goes to my incomplete file after it tells me it's 100% complete. Then when I try to drag it over to my shared files, sometimes it works and mnost of the time it deletes them. Where are my songs going, and what am I doing wrong?

P.S. If i try to download the same song again it asks if I want to overwrite it. But there is nothing to overwrite.

thanks anyone