We bought the Zvox soundbar from HSN for $129.It works well but has it's own remote. You may be able to sync it with your TV remote.
It has much better sound than tiny speakers on flat screen TV's. Movies with a lot of "hushed tones" and high speed babble on commercials is irritating especially if you are hard of hearing like me. Headphones may be another solution for you if you can leave regular sound on for your wife.
Now $149
https://www.hsn.com/products/zvox-accuvoice-tv-soundbar-with-6-level-dialogue-boost-/8812050