If money is an issue, there are always DIY options that can be made and if you take the time they can look very nice too....
lots of good info about room acoustics here:
http://www.ecoustics.com/Home/Accessories/Acoustic_Room_Treatments/Acoustic_Room_Treatment_Articles/
Rob
lots of good info about room acoustics here:
http://www.ecoustics.com/Home/Accessories/Acoustic_Room_Treatments/Acoustic_Room_Treatment_Articles/
Rob