Hello, We are in a process of developing drivers for a novel wireless headset and I have a concern regarding streaming SPEEX encoded voice over USB Audio class 1.0. Since SPEEX (or other voice coder) is not a supported format according to the USB Audio 1.0 specification, I am wondering if is there any trick to solve this streaming problem. Thanks and regards, Szabolcs Sandoly Senior R&D engineer MFKK Invention and Research Center Services Co. Ltd. H-1119 Budapest, Tétényi út 93. http://www.mfkk.hu