While the experts debate the futility of video blogs, there are some interesting lower-tech projects out there: a site called Light Moving in Time is running an MP3 Blog
apparently consisting of the author's daily toying at a DJ table. Although they're mostly hip-hop, it tends to be that rare subgenre of hip-hop that's actually good. (If nothing else, you will recognise 5/2/2003 and 4/2/2003.) Enough other people agree with me that the collection is in an art show somewhere.
If you decide you want to listen to more than one, I wrote a little PHP script that rips a playlist from the page.