It's probably spam/corrupt files put on the network to discourage people from downloading. Thats why you should always check your files after you d/l them, so you don't unknowingly share bad files.
About all you can do is keep searching until you find what your looking for. Also the newer and more popular files tend to have a lot of fakes being shared. You can try looking up the file with
Bitzi but music files aren't usually rated, but it helps sort out large files like videos.
More info can be found in this sticky:
Major Topics for Upload/Download Help