I managed to get this working using Logician's template, by loading it as an iframe within the template, like so:
Code:
<iframe src="http://www.sevenstring.org/forum/radio.blog/index.php" name="radio" scrolling="no" frameborder="0" width="220" height="300"></iframe>
It seems that the playlist "populator" script isn't all that stellar at detecting bulk uploads. I uploaded about a dozen tracks at once, and only one or two would show up. I waited about 10 minutes, and touched each of them in turn, and once the timestamp was different enough, it recognized the complete list.
For those of you without shell access to your webservers, you might want to just upload them one at a time, about 5-10 minutes apart if you're having problems with the playlist not showing all tracks.
Hope this helps someone out.