This breakdown of the cost of a typical major-label release by the independent market-research firm Almighty Institute of Music Retail shows where the money goes for a new album with a list price of $15.99.

$0.17 Musicians' unions
$0.80 Packaging/manufacturing
$0.82 Publishing royalties
$0.80 Retail profit
$0.90 Distribution
$1.60 Artists' royalties
$1.70 Label profit
$2.40 Marketing/promotion
$2.91 Label overhead
$3.89 Retail overhead

Taken from Wal-Mart Wants $10 CDs.

See also Slashdot:
http://news.slashdot.org/news/08/03/25/1856245.shtml