L Shaped Table Furniture Layout L Shaped Living Room Dining Room?

Furniture layout L shaped living room dining room? - l shaped table

Need help deciding on the placement of furniture in a room in an L-shaped dining room combo. (The furniture in the pictures below is not mine, is that part.)
The furniture that I have is 2 sofas, a chair, a piano, table and chairs, cabinet and buffet. I'm going to buy tables and coffee table, if necessary.

If you have suggestions on placement of furniture, it would be useful. I thought about somehow couches around the fireplace should be, but I wonder whether it would be very difficult.

The following link takes you to the photos.

http://s967.photobucket.com/albums/ae159 ...

Thank you for your ideas!