looks good,
I realy like the switches !
The lamps should have the same texture structure but different colors.
Would be nice seeing this placed into the whole picture, maybe you could use some photoshop layers from Magui for it ?
Regarding the loading status, i personal wont like it to much, i wouldnt miss them.
...if you manage all this blinking fitting with sound (blinking could also start 2 seconds before the sound play, end 1 second after the sound is finished) that would be awesome !