Hey Mike,
Sounds like a great idea. One of the mistakes I feel I made in mine is in not getting permission to adjust the tempos to a regular beat.
Are you using Audacity or Garageband, and either way, do you have the ability to match the BPM of each track as you lay it down?
I would say it might be beneficial to set up Weeks 1-6 and then set up several 30min runs with 120bpm, 150bpm, and 180bpm.
Right now I'm running week 7 and averaging a little less than a 10min Mile pace.
Name for it?
Mike's Pix C25K Mix.