Be able to search whole drives for ALL MP3's &/or Multiple drives - then allow user to delete duplicates and/or pick which ones to keep and work on - I know I have thousands of duplicate files & some are terrible rip-jobs (I own thousands of different types of media as well records/tapes (ech-8 track as well) /cd's/dvd's/etc.) but the machines I ripped them on were not pro-quality). O well, that's my 2 cents.