If you're waiting for Doom as much as we are, then you're in for a real treat. Rise of the Triad 2013 composer Andrew Hushult has put together a remastered album of the Doom soundtrack and released it for free.
The album is based on the original Doom's first episode, Knee Deep in the Dead.
It's available to download on ModDB and you can also listen to it on YouTube in the video below.