Yourmuze I can not play in the background on my bold 9900 and Bis falls when forced into 3G only

Please put yourmuze player for blackberrys as in the bold native player of 9900, the signal loses Bis service and put the player in the background to use another app or write a message and exits down the reproduction error multimedia content and service becomes Bis, this did not happen in my torch SÖFW 9800 with 6.0, please help I can do I can not live without yourmuze it was great when I heard my favorite season and also wrote for the BB messenger. please help