: This free duplicate finder from DigitalVolcano has some worthwhile musical features. Once you've pointed it to your music folder, select the Music Search option. Underneath that, I recommend you check Artist and Title and uncheck Album, then click Go. But there's a serious flaw: Duplicate Cleaner doesn't consider songs duplicate if they're in different formats. In my tests, a .wma and an .mp3 of the same song didn't turn up together.

: If you're willing to shell out US$20, and all of your music is in .mp3, .wma, and/or .ogg files, this is your best choice (or at least the best one I know of). Abee lets you search for duplicates or "similar files," and with the later option, you get some very smart choices. You can control the degree of Artist and Title similarity (that Beatles vs. The Beatles issue) and set how much of a time difference is allowed. Once it gives you list of likely duplicates, it offers plenty of options for playing, deleting, or moving the files. (Click the image for a closer look).

Add your comments to this article below. If you have other tech questions, email them to me at , or post them to a community of helpful folks on the .