dirpy Studio is a slick way to turn YouTube clips into MP3 downloads
Search for a video on dirpy.com, and the results are displayed in a list. Pick your desired clip (ahoy, Alestorm!) and dirpy Studio opens the interface you see above. Rather than just giving you a file immediately, dirpy allows you to customize the file name and ID3 tag data. You can also clip a specific portion of the audio if you wish -- great for lengthy conference videos -- and video download links are also provided.
Dirpy also offers a bookmarklet, putting Studio within one-click reach while you're browsing YouTube itself.
There's still one big downside, of course: a lot of the audio on YouTube isn't of the best quality. If you're after high-quality audio, no YouTube-to-MP3 app is going to meet your standards. Dirpy's good enough to earn a spot in my bookmarks, however.