Pics will help.
However, I'm assuming your CFLs are on wall mounted sockets. I'm actually talking about floor lamps or special wall mounted lamps pointing downwards to sort of "set the mood". Google some images of home theater lighting and you'll see what I mean.
You should also place lamps in a way that they never shine on your TV/screen but they highlight the audio components. For eg, a photograph on Stereophile from the AXPONA show had a very cool setup where they had put small lamps at the base of tower speakers pointing upwards. It really highlighted the speakers well without looking too jingbang. You can even place lights behind the speakers. It adds a fantastic effect if done properly.
You don't need rugs under the speakers. You are using the spikes already. For the walls, if you can afford some good acoustic panels covered with wallpaper, go for it! It will sound the best but will be a little expensive. Else, you can always just drop in wall hangings, heavy curtains, bookshelves etc. Anything that will help absorb reflected sound and improve the aesthetic aspect. Plants can help diffuse sound and add a wonderful organic feel to a room.