Spotisquare is a mobile web app that connects music to places. Point your mobile browser to m.spotisquare.com. You can just use Spotisquare to check-in on Foursquare, but it also connects Foursquare venues with Spotify playlists.
When you find a venue that has a Spotify playlist, you can listen to it in Spotify, and also add your own
songs to it. You can add a playlist to a venue with our connector. For more info read the FAQ.