Hello,
Unmfortunately in current version it is impossible as BlueSoleil starts both services (A2DP and HFP) when you connecting to HFP. However, we are working on this matter and hoipe to get it solved soon. Note that this appears not with all devices. I have seen it also with BlackBerry but never seen that with Nokia. I guess it depends on target device. If target device has A2DP support BS connects to A2DP as well.