Beatmania by itself is rather intimidating (7 buttons and the turntable) but no ones gonna post a shit run. So of course you won't find any.
I wish i could be that coordinated. The Gamestops around me suck and don't have it. And call me crazy, but I don't really trust buying games (anda lot of other things) that i don't buy in person. I like to be able to see it and know that it will work before hand.