DVD HOME THEATRE SYSTEM

This may not be Dependant on the Music or DVD, but with the setting on the Home Theater system. Try out all the modes - such as 2 Speaker, Multi etc. within the Home Theatre system. In one of the mode only the center speaker works.
Hope this helps. Good Luck.
~SmokinJoe~

I hope Bose has over 90 days warranty because you need to return that!

Some players are harder than others to do this but you may want to try here or here

what type of connection are you using.

some devices these days have a built in volume control, try using your remote for which ever dvd player or satalite bix you use, on push the volume up button on it while you have the volume on the tv maxed out so that you will be able to tell a defference if it works or not.

Try 7385652500070000+INFO When You Put In A Movie Let Me Know If It Works.

you can find it at this insignia website url:
http://www.insignia-products.com/skins/skin_1/Topics/Documents/07-683%20NS-H2002B_WEB.pdf

Jvc home theatre system cable that connects the the bub and the dvd

Yes. Take the output from the sound card and connect it to one of the tape inputs. Note: you should use the "line out" jack for this.
Dan