Ok, this remote is programmable. I don't know if it will work with the sound bar though, but you can try.
From the tv user manual, page 23, here is the procedure to program the remote.
1)Find the code for your device brand in the remote control device code table on pages 29–35. If more than one code is listed, try each one separately until you find one that works.
The Sony codes you will need to try 40689, 40815, 41058, 41441, 41258, 41622, 41658, 41758, and 41858. Any one of these codes can work with the TV.
2)Next, press a mode select button (choose VCR/PVR ), until the mode select button blinks 3 times.
3) While holding down RECALL, press one of the five-digit device code for your device. (40689, 40815, 41058, 41441, 41258, 41622, 41658, 41758, and 41858.)
If a valid code is entered, the mode select button will blink twice.
If an invalid code is entered, the mode select button will blink one long blink.
Point the remote control at the sound bar and change the volume to test the code.
If the device responds to the remote control, you have entered the correct code.
If the device does not respond to the remote control, repeat steps 3 and 4 using another code.