Having just been introduced to the dubious legality of muxtape.com, I decided to see if I could make it a bit more useful. I've been meaning to play around with greasemonkey again since it'd been a couple years since I had, so this seemed like the perfect opportunity.
I found a script at userscripts.org that generates 'download' links for each of the songs on any muxtape page, then added to it the ability to generate an m3u (playlist file) which you can click to stream all the songs in your audio player of choice. No more having to leave a browser page open just to listen to muxtapes. No more having Flash take down your browser. Awesome.
If you'd like to add this functionality to your muxtape experience, simply install Greasemonkey (or whatever IE/Opera plugin does the same thing) and head over and install muxtape downloader / m3u enabler from UserScripts.org.
If you've not seen muxtape before, head on over and listen to my first attempt at online mixtapery: nyquildotorg.muxtape.com
(Is there any interest in enabling 'podcast' functionality to your muxtapes, allowing people to subscribe to them in iTunes/whatever and have them auto-download?)