A:AnswerYes it should be able to play it via USB drive if you connect it to it it should automatically go through whatever it does to play the music at least from my understanding that's how it works.
A:AnswerPress and hold the source button on the soundbar (not remote) to pair the subwoofer. To adjust the subwoofer volume, press the BASS button on the remote, when the LED blinks you can adjust the volume Up or Down, press the OK button to confirm.
A:AnswerBest sound advice , play on words, get yourself an Insignia sound bar and get ready for the enhanced experience of your life. You may burn your tv out because you will never want to turn it off!!!
A:AnswerIf you could somehow get the signal from the sound bar to the subwoofer, I am sure you could swap it out. But this uses a bluetooth connection to connect the soundbar and "subwoofer". So you would have to put a bluetooth receiver on the Klipsch subwoofer. And then find a way to pair it. But it would be interesting to see if its possible