Effective digital music promotion.

[RRBR]

I understand some information is a kind of a commercial secret....but we can talk about general things.:)
What promotional avenues are effective concerning digital music distribution?
Radio? Web-Banners? Myspace? On-line Radio?

[bigtunes]

kinda depends on genre as well, i assume.............................

[RRBR]

Yes....it depends......but I think it depends in a way - what radio to choose, what promo company to choose and so on......the main idea is the same......