Very fun game but the Demo is more than enough

After hearing the description during the Bombcast I immediately knew this would be a game I'd be interested in and I downloaded the demo through steam right away.  I'm having fun seeing what songs make for good levels (Wolfmother's Pleased to Meet you), but beyond what's available for free, I don't see much incentive to buy the game.  Nothing seems to be limited beyond leader board and online features. As long as you navigate your song folders easily or throw a bunch of songs into one place it's easy to play a bunch of songs back to back without buying.  
 
For me buying it has come down to whether or not I want to give them money for having fun during the demo.

which game is this?
 
(there's a bug where your topic gets chucked into general discussion)

I've noticed.  It was supposed to be for Beat Hazard. I forgot to attach the post to a game. I'll try to move it