This may not be exactly what you are asking for ... but a search on Amazon for "bluetooth transmitter 2 devices" turns up several devices. I'm using it with a T

This may not be exactly what you are asking for ... but a search on Amazon for "bluetooth transmitter 2 devices" turns up several devices. I'm using it with a TV, but I don't see why the transmitter couldn't be plugged into the audio out on a laptop to send the audio to two devices.