I have my speakers hooked up to my airport express through a receiver. Airtunes works like a charm. However, when i try to hook up my printer through usb to the express i get a distortion sound on the speakers. I have tried another usb cable and still no luck. I bought the airport express like 2 months ago....but never tried both speakers and printer hooked up at once till last night. should i try and return it? what should I do? any suggestions?