public static void unMuteBackground(){

		// Used for loops
		int i;

		// Used so that the methods associated with a midi player can be accessed.
		MidiPlayer currentMidiPlayer;

		//Checks the slide for slide for content
		if (null != entityPlayers)
		{

			for(i =0;i <entityPlayers.size(); i++)
				{
				// test whether the players are active.
				if (entityPlayers.get(i).getIsActive()) {
					if (entityPlayers.get(i) instanceof MidiPlayer) {
						// un mute player
						currentMidiPlayer = (MidiPlayer) entityPlayers.get(i);
						currentMidiPlayer.unMuteMedia();
					}
				}
			}
		}
	}