The inaugural offerings include a Soul Calibur sampler, called SoulCalibur Suite: The Resonance of Souls and Swords, and sound effect collections from Pac-Man and Xevious. A $3 charge for each "album" isn't terrible -- it's equal to the cost of buying each of the Calibur tracks individually, and it's a fairly small price to pay for the full set of in-game sounds for the other games.
Due to the nature of iTunes, however, individual tracks from the sound collections are spectacular ripoffs. Each sound effect, purchased separately, is 99 cents. We don't need "Special Flag: Get" or the incredibly irritating Xevious theme that badly. Do we?