JamTiles essentially enables users to share music and tastes with other Windows Phone owners around the world. Each song (or "Jam" in this case) can be published online with notes to share thoughts on that particular track. That's the basics of the app, but there's slightly more to it than that.
The best way to get the most out of JamTiles, as well as sending out your own thoughts on music you play on a Windows Phone, is to pin the JamTiles to the start screen. Up to six can be pinned at any given time and each will update automatically every 30 minutes with a random Jam from other users. Jams will be locked in on each tile until selected and cleared.
Recent Jams can also be viewed and accessed within the app, making use of the simple layout. When interacting with Jams other users have published, the ability to rate that Jam, as well as search for the track on the Xbox Music store is present. This is helpful for those who desire to use the service to discover new music and easily download / purchase said music from the store.
You can download JamTiles from the Windows Phone Store for free over the next 24 hours (listed for Windows Phone 8 only). Windows Phone 7 and Windows 8 versions of the app will launch next week.