I just bought a rolling television stand, and will be buying an LED television to mount to it for our exercise room.  While we wanted it primarily for entertainment on the elliptical and for some fitness DVDs, I would also like to be able to use it for music.  I have thought about a soundbar with a sub, and the Klipsch ProMedia 2.1, but I am open to suggestions that could be mounted to the rolling stand that would work for television and Pandora or other music through the television.  Any ideas or advice?

I could keep the sound system separate, and I already have plenty of speakers and amps to do that, but I like the idea of this being an all-in-one solution.