Over the years, they have been moved from PC to PC like the red-headed stepchildren of my files and documents. As a result, whenever I want to play any music - I have multiple copies, uncategorized files, multiple names for the same artist, and song. I didn't loose any sleep over it, but it was anoying.
So since it was a long weekend, I had a little bit of time to check something that has been on my to-do list for the longest time - spring cleaning my MP3 files. My saviour was Media Monkey - www.mediamonkey.com: