Promoting music online has different needs than e.g. pictures or software. Tradebit trys to be as specific as needed but as open as possible to cater to musicians, movie makers, software vendors, etc.
Especially for music, there are a lot specific promotion sites, books, tips and service providers out there. I am happy to see, that tradebit is mentioned more and more.
Bob Baker, an author of a quite successful book for online music marketing, has a lot of references, too.
He mentions us in his new blog: Bob Bakers Blog among our competition and other places to promote music, you might want to check it out!