Can I remove duplicate files in my playlist?

I have a couple of hard drives, and back-up my music too (because I don't want to lose it when a drive crashes). The back-ups are scrambled all over. So I added all my drives to the Media Library, with the result some songs are listed twice or three times. Can Songbird identify those duplicates, and remove them? Doesn't have to be from the hard drive itself, just from the playlist. It's very irritating to hear songs three times in a row, even with good ones, and I have way too many songs to delete them all manually. Thanks a lot in advance!

Oh, and I have Windows XP, guess that matters too.