lol, I'm on my 5th machine now, mainly due to the noise. I kept calling them at 2 in the morning to complain. Finally I figured out that with an extensionr I could put the machine out in the hallway while I slept relatively quietly in my bed. If you have enough room and the noise is really that bothersome (it was for me), you might think about an extension to the patient liner and moving the machine.
I put a towel under my machine and it did help cut the noise. Keep us posted!