Others can talk about music promotion better than me, so check these out:

The 20 things you MUST know about music online (by Andrew Dubber from New Music Strategies) at http://newmusicstrategies.com/2007/03/16/the-20-things-you-must-know-about-music-online/

Bob Baker’s The Buzz Factor at http://www.bob-baker.com/musicpromotionblog/index.html

Derek Silvers’ CDBaby tips at http://cdbaby.net/tips