If you think it's as easy as downloading this app and listen to music instantly as a free user ==> then your in for a surprise. As a free user you can't stream music. You have to get the music from there computer app which is free and sync it to your iPhone. The whole invite thing is stupid.
This app is only for paying premium accounts, which do not require an invite. I've signed up for the premium and absolutely like it. I found myself spending hours finding new songs. AirPlay is supported.
tags: spotify, ipod touch app, free invite codes, cheats