This might be particularly helpful when cleaning up your old music projects. Recently i had to deal with the problem of eliminating duplicate files within a fairly large set of mainly ms office files (under windows).    For me, a program called "alldup" perfectly did the job     Other solutions i tried: winmerge: should be great for comparing code files, as it offers an in-file comparism doublekiller: basicly does the same job like alldup, but offers less options dupeguru: they offer a music edition. should be very interesting for people who want to tidy up their mp3s