"If it's not Zune leaks it's Comcast leaks, and this time we're hearing that Comcast is prepping its own music and movie download service. You can select TV shows, music or movies for purchase and download. Once you pay, you watch all content on your Comcast set top box. Plus, you can even go to the Comcast site and download whatever it is you bought on iPod/PSP/Zune/Whatever format."
It was only a matter of time before we started hearing rumors of cable networks' response to Apple's assault on their market share. I suspect Time Warner and others will announce similar plans in the near future as well, with the ability to download and pay for music and movies just as you can now use pay-per-view or movies on demand. The appeal here is that they'll likely support many more devices than Apple or Microsoft's service will, giving end users much greater content portability.