Bluetooth speakers working while browser app not on tablet display

[Phil UK]

The other day I was playing a game on my Ubuntu tablet and I wanted some music to play through the browser and my Bluetooth speakers. So I connected the speakers and started to play the song via the Internet. I then returned back to the game at which point the music stopped, as the screen being displayed was not the music. On leaving the game and returning back to the music browser screen, the music started to play again.

So I cannot have music playing through the Bluetooth speakers without having the music browser page up. This meant that I could only use the tablet for one purpose (playing music from the net).

Is there a setting I can activate to allow the music to continue to play in the background (via the Bluetooth speakers), whilst I go to different screens on the tablet? If not this would be a really good idea to implement.