If you are complaining about the volume control on the Xoom, try Audio Manager Pro. With the app, you are able to control your volume through that app. It doesn't mess with the volume bars on the side of your Xoom.
I have been using Audio Manager Pro on my Xoom for a long time. It's easy way to manage all of your sound settings. I don't have much trouble with the volume buttons, just click it once and control the rest on the screen.