Music browsing program?

Hey everyone I need a little help here. I have about 4000 tracks in my iTunes library and I have another 5000 or so on an external hard drive. The files on the external drive aren't aranged in any particular order. It's all music that a friend gave to me so I have no idea what's in there.
I don't want to import it all into iTunes and mess up my stuff that's in there already. Does anyone know of a program I can use to browse the contents of the external drive by artist/album? I't's getting to be a pain in the butt to scroll through 1000's of files and open each one that seems interesting in quicktime!:eek: