Here's some music that I've been considering pulling from for creating a theme-song-type audio environment for my dark future radio play idea. It's from the extended mix of Orbital's The Box, a 28-minute track. This is about a 5 minute excerpt, does a nice job of creating tension, paranoia, etc:

The Box - Excerpt

Now, if I want to really do this thing, I'll try to use some original music, but part of my idea is to weave in whatever works, and if it's actually already released/copyrighted to do the Dawson's Creek thing and include links to buy the album, claim fair use. Should work unless we get hugely popular, which is a good problem to have.