There should be one and only one song playing at any given time.
Consider this:
Load a song to play.
While the current song is playing, press back. You should be in the home screen with the "Jam to: ..." button loaded with the name of the song currently playing.
Press "Jam to: ...". Notice that the countdown will play along the current song and then the song will repeat.
Also,
Load a song to play.
While the current song is playing, press back. From the home screen choose a new song to play and play it.
Weird stuff happens, ultimately leading to both songs playing side-by-side.
For this part, the behavior should be as if user tapped "Choose jam song" while in the player view.
There should be one and only one song playing at any given time.
Consider this:
Also,
For this part, the behavior should be as if user tapped "Choose jam song" while in the player view.