I love iTunes(R), though it has not been completely problem free for me. I have a large collection of music – like 8 days without including podcast subscriptions and the like – so being able to tag music with different genres and ratings is useful. I use smart playlists to automatically include the appropriate set of music, which means that new music is included just as soon as I tag it.
But, iTunes(R) is not the only application in the MP3 library niche, and Lifehacker has collected the top favorites of their readers. Instead of the usual “Top 5”, they gave us a “Top 6 MP3 Tagging Tool” collection because of a near tie between two of the favorites. Five of the applications are free, the other has a relatively small cost – certainly well within the affordability range.