A high definition (HD) video preview (165 MB) is available for download on Xbox LIVE Marketplace, however, it only shows select songs (including "The Day That Never Comes", "The Unforgiven III", "My Apocalypse", and "Cyanide") being played on Guitar Hero 3's hard difficulty.
You can listen to a sample of every song on the album by downloading the FREE Guitar Hero VIP Pass music app hub.
In addition to Guitar Hero III: Legends of Rock, this piece of DLC is also compatible with the following Guitar Hero games:
Guitar Hero World Tour
Guitar Hero: Metallica
Guitar Hero 5
Guitar Hero: Warriors of Rock
Metallica "Death Magnetic" Full Album