Windows/Mac OS X: Free application BPM Analyzer determines the beats per minute (BPM) of any MP3 on your computer, then automatically updates the ID3 tags with the BPM info—perfect for finding workout music to hit the 120-140 BPM sweet spot. More »
Inconsistently tagged MP3s can be a real pain. Avoid hours spent digging through your music aligning bands and album tags with these hard-working Media Monkey scripts. More »
Mac OS X only: Free application Tune Instructor adds advanced ID3 tag editing for your iTunes library through a smart third-party utility. The iTunes helper boasts features like search and replace for your tags, or it can set ID3 tags from a filename or set filenames from ID3 tags. It can automatically search and embed album art or lyrics—though I ran into issues with German-language lyrics sometimes showing up rather than English. The application has a lot of potential, and works well overall. I did run into a few peculiarities when testing it, but overall it offers advanced, worthwhile ID3 editing beyond what iTunes offers by default. Tune Instructor is freeware, Mac OS X only. Tune Instructor [via Cool OSX Apps]
