MEX-BT2900 and SMS message tone in Tuner mode

[two_wheels]

I have the Sony MEX-BT2900 and an Android phone (Google Nexus One).  When in "BT Audio" mode on the MEX-BT2900 everything is great, but if I am in Tuner mode, if I receive an incoming SMS there is no audio tone indicating that I received a message.  Incoming phone calls work properly.  The phone recognizes the MEX-BT2900 as an audio device, so it trys to play the sound through bluetooth, but no sound ever comes out of the MEX-BT2900 and unless I look at the phone, I do not know there is a message.  Any suggestions?  Thank you.