As usual the artist get the least. The record label used to get the biggest part of the pie, but now it’s iTunes. With the labels the artists could make anywhere from .50 to $4.00 per CD sold, but with iTunes selling mp3’s for .99 the artist get pennies per cut, about .05—.20 depending on the deal.
So when artist complain you’re stealing from them when you download something from LImewire for .00, just buy a ticket to their next live performance and throw down the bucks for a Tshirt. The money the artists make from selling ancillary product goes directly to them. Hence, many bands give their music away to build loyal a fanbase to sell their real money making items.