"Left Behind Games is integrating links to the iTunes Music Store into the upcoming title, "Left Behind: Eternal Forces", allowing gamers to easily navigate to the store and purchase music they hear during gameplay. Clicking the link will pause the in-game action and launch the iTunes Music Store page featuring the song. After a quick download, the game is picked up where it was left off. Gamer’s can then customize their play list and listen to the different songs they have downloaded while in-game." The game's release is scheduled for November 2006. Here's Gamespot's preview.
-- press release (pdf), July 26, 2006