One last photo to show doorway wall, please?

Not quite sure what you want us to suggest at this point. I would start with clearing everything out. I think SW Kilim beige is a great earthy relaxing color that it easy to work with. Maybe you could post a close up ohoto of your art;)

A buttery yellow/cream would look better and might tone down some things not bright but warm.... Something like this

Here is a room in SW Kilim beige

I am sure, rnb666, that any number of neutral wall colours might be acceptable here but, in lieu of any additional information, what I think you are wishing for is a loosening of the current look. A neutral sofa will make a practical start, allowing you to add a more adventuresome pair of chairs in any colour that takes your fancy. Add print through cushions for the sofa that incorporates the colour from the new chairs. Tables of mixed materials will give the casual update you are craving. End tables should coordinate, but not match. A console to replace the large end unit gives you display area for sculptural pieces, with the TV mounted above, if you keep this configuration. I suggest you remat/frame your art work to coordinate with your new choices, and pick a wall colour deeper in tone than the current choice. Best of luck.

Try lighten the color of the furniture to get a more relaxed filling makes it more chick. Also a wall full of art in different frames makes it eclectic and warm, besides reinforce the artsy atmosphere the piano has.

I noticed that this is a double post:)

You can never find it when you go about looking for something specific! Something like this but less gilding. http://houzz.com/photos/83830

This is more arty, eclectic...