I've been buying and listening to a lot of albums in surround sound recently, and only joined the forum here last week. But I've been inspired to try remixing one of my own songs in surround after reading all of the great discussions here. So I spent the last week mixing my single "Faultlines" in to 5.1 Surround Sound from the original multitracks.
In this video I give a brief overview of the history of surround sound, including Quadraphonic, 5.1, and Dolby Atmos, and then break down how to mix an entire song in surround.
THEN I give away a free download (multichannel FLAC file) of the finished, mastered, 5.1 surround sound mix so everyone (who's set up for it) can hear it!