1. install iTunes 4.9 or later.

2. read this (a short description of how to channel del.icio.us' filetype-tagged feeds into iTunes' vidcast capabilities).

3. instead of "mov+funny" use "mov+music". you won't be able to get any wmv/rm/avi or others, but that's probably just as well. supported formats/filetypes: mov, mpg.

4. erm... that's it. (sure, there's a load of junk too, but at least it ain't drm'ed $2-a-shot junk.)

i actually just tried this myself and... it's pretty f*ing cool.

del.icio.us is basically a link-regest, so the feed is a constantly updated stream of links that the 100.000+ (?) del.icio.us users decide are cool, sorted by their filetype (and tag). iTunes downloads a list of the latest items featured in the feed, you choose which ones you want (this takes a bit of guesswork sometimes, since not everything has a proper filename/description), and then it downloads them. you view these videos either in the little artwork window, or, by clicking on it, in a separate floating window in the file's original size. since the videos are downloaded, not streamed, you can keep what you want. not quite MTiVo, but close...

ps: you can also use a different vidcast client, such as FireANT, but it's kinda nice to bite the hand that feeds...