I Heart Radio is the popular app designed to let you listen to live FM radio streams without an FM receiver on your phone. Sure the Z30 is said to have this built in antenna, but as a is the case of a regular radio, it is limited to a certain distance from the transmitting tower. Not this app though. You can enjoy live radio broadcasts from all over the country and if you eventually get tired of hearing the same three songs played over and over, then you also have the option to create your own station based on a genre or artist.
The latest update brings improved Facebook handling and some performance tweaks. As a huge improvement over other popular apps like Spotify, music discovery is a huge plus of listening to non-stop random playlists.