FLVTo is an online Youtube to MP3 converter. Just pop in the URL of any YouTube video and the site will proces the file and spit out an MP3 which you can download and listen to. If you've already gone through the process of downloading YouTube videos as FLV files, you can also upload Flash videos from your desktop for easy conversion.
What's new in this version:
This version is the first release on CNET Download.com.