Couple of comments that just immediately came to mind:

1) Ugh, Launchrock. I'm very tired of LR pages, they give no info and serve no purpose. You'd be better off with your own landing page and fake screenshots. With so many Launchrock pages that end up being fake, I think there's a weariness about it now.

2) You use a lot of words but I'm still not sure what you do. Are you a web app? Are you a social network? Can I listen to music, or just talk about music? Why do I need another music app when I have Spotify and iTunes? Answering these questions will make it more likely that I WANT early access to your site.

3) If you stay with the LR page, at least mock up some fake screenshots for the background. Try to be as real as possible, even if you have nothing.