nettyfink,

Are you using optical, or RCA?

You may be able to connect all your devices to the TV, and then send the signal out through the optical or audio out. With the Un55B6000, there is an analog (#11) in the diagram below that can go either to another 3.5mm male jack, or to an RCA, depending on what the Polk soundbar has:

http://i397.photobucket.com/albums/pp60/samsung_hd_tech/outputs6000.jpg

Let me know if I can assist further.

--HDTech