Hi Robyn,
to the forums, hope I can help.
There are a lot of fake files on the network and the spammers have programs that automatically return results for whatever you search for(autogenereted spam results). You can find more info in this thread:
Fake files showing up in search results
Try the suggestions in this thread to block hosts that are known to spam the network:
No search results-(How to filter bad ip's)
More tips in this thread:
How to find music(and movies).