That's the hard part with marketing yourself, especially on sites like NoWhereRadio and SoundClick. Unless people are going there and playing your music, you won't be "seen".
One thing you might want to consider, to kind of get your name out, is come up with a nice little piece of text, explaining who you are, what kind of music you play, and that you have sample audio available. Almost like a press release. Then visit other music-related bulletin boards, newsgroups, etc. and put that information there. Come up with a good, solid signature for yourself, something like:
Harrison Weber (or whatever you go by)
Acoustic Music for the Independent Mind, Body, and Heart.
Samples At:
http://www.purevolume.com/harrisonweber
and be sure to include that in
every post you make. Make that "Acoustic Music..." phrase your catch phrase. Use it anywhere and everywhere you post (well, in relevant, music related posts).
If you have an email address you're primarily going to be using for your music contacts, you will definitely want to include your signature in it.
