I just purchased a game, and I was playing it.  But its saying it was a demo and my time ran out.  Did i miss something? I thought itt was downloaded because I played it....  Sorry, new to steam.....

It asked me to buy the game, but I have a receipt saying I did.

Which game?

Go to your games tab and make sure you're playing the correct game. It's possible you clicked on a demo when there's a full version also on the list.

It's called Audiosurf, it's currently on the font page on Steam. Did I not download it? Sorry this must sound retarded, but I just started Steam.....

Theres only one thing on the list, and it just says Audiosurf. Am i playing the demo?

That sounds like Audiosurf's demo. Did you buy the full version? If so, then you should be able to download the full version through Steam at any time from your account.

How, what do i do?

if you bought it, it should be grayed out in your games tab. If you didnt, buy it and it gives you the option of downloading it after purchase.

if he has receipt, then he bought it. Go to My Games tab and Audiosurf must be there ready to download, just like ssj12 said.

Its in my games, but i see no option to download.......It's just there...... I played it, but it was apparently a demo, so im confused.....