Man, only a few things I would really change.

First your demo songs...get those so they loop all over your site after you visit the page.

Next the "off the cusp" track that you have back a few pages...I think that would work great as the sites intro/main page song.

Next ( also on your demo page ). Some text I would change. Drop "these songs sound like this due to mp3 format" thats just insulting to those viewing/hearing your site. I think you would be much better off if you replace the " mp3 format " excuse...with a description of your live sound setup. Then you could also avoid the " but its sounds almost like a full band live!" lol you wouldn't need to even speak of that if you described your live sound setup...some crap about speakers this, mixer that, eqed for the room something. As for description of the demo recordings...just be direct and honest, let everyone know " to provide this demo mixture I utilized direct stereo recording from my main keyboard, for more on my live sound read below."

Beyond that...next live show you do RECORD IT. Record your keyboard direct, and mic whatever your speakers are to capture the air of the performance. Hell even put a mic to pick up the crowd, cause if you got laughing and happy folks with glasses clinking in the background. You live and good times will not be at all hard to convey...and out of an entire night your sure to have at least one song that comes off how you want it.