[b1ake]

Ah in demo mode, just move the mouse over the highlighted strings at the bottom and they will play. No need to click or anything.

[Killswitch]

Did that, nothing happened. Just air guitar like a gangsta.

[b1ake]

Haha, sorry about that, probably a bug.

If you don't mind sending us OS / browser / version + the lesson you played, we can try to debug. Our email is [e-mail].