I like the overall concept, and honestly as a web designer, I can spot a few problem areas.
1. No HTML alternative. - This is a must, believe it or not, Flash is a tool that can be utilized by most but not all, as it can be a security risk.
2. Load time - Also related to Flash... it seems that all your graphics are simply that, graphics, as opposed to vectors. Proper utilization of vectors can give the same appearance, but a more fluid look at any size, zoom, etc.
3. Width and height parameters - 100% width and 100% height can look good on some resolutions, however it means the "website" is constantly changing sizes. Not all windows open maximized, therefore your website may be really small at first, putting off some visitors.
4. Mouseovers - They look great, but can be very annoying. Naturally, knowing you're the bass player, I wanted to go straight to your bio. Quickest way is a straight line, whereas the menu disappears. Moving left, then down -- in otherwords an abrupt change in motion with the mouse can deter some users.
5. Image - Probably the most important: looking at the website, I can't tell the genre of your music. Frankly, if I need to put this much effort into checking out a band, it may or may not be worth it.
Don't get me wrong, I enjoy the overall feel of it, but if you could utilize more html and less flash, I think we're all going to be a little bit happier.
Let me know if you need any more ideas.