[kilith]

I just want to ask did you install Hoster on your main hard drive and then copy your 1000 discs and then move your song folder because your main HD was getting to full? If you moved your files to the exteranl after you imported them you then must rebuild your database.
Do it this way:

Tools->build song database->click on select folder->find your folder on your external drive should be like F:\songs if your external is F-> after you find the right folder click on build songs database

This is what I had to do when I transfered my songs to a larger hard drive.

Also Windows Media Player has nothing to do with Hoster. You will never use any wondows products (except Windows itself) to run any Hoster files.

Hope that fixes your problem.