I have a strong preference for paying for music. (Though I'm spoiled, and am less inclined to pay for whole albums.) I looked everywhere (err, meaning iTunes, Amazon, and general Google) but could not find an MP3 for Novel's Peach (a slightly raunchy hophop slow jam)
I tried the OSX app "Grappler", but it has been failing me lately. However a friend pointed me to http://www.deturl.com/ a kind of metasite with links to various "grab file from streaming" services. http://convert2mp3.net/en/ was able to make an MP3 from the video, and then http://www.telechargerunevideo.com/ was able to grab a different youtube movie that I had previously uploaded, but that the OSX app Grappler was choking on. (Grappler wasn't able to do the Peach MP3 because "video not available on mobile").
Again, I pay for music (albeit, in a entitled way) whenever I can, and hope people dig on supporting artists as well.