We are actively pursuing the root cause of this and due to the fact that other manufacturer's devices are also having similar issues, it appears that the problem may be on the chipset side of things and not necessarily an issue with the USB device driver software.


Here are our findings so far in terms of things you can try:


1. Many end users have reported that using a USB 2.0 powered USB hub with these devices fixes the noise problem, despite the fact that we do NOT support the usage of USB hubs with our products. (If you fall into the realm of running on this specific AMD Turion X2 Dual Core Mobile with Vista OS setup, then consider this to be an exception.).


2. Several end users have found that right-clicking on the Volume Control icon in the Vista System Tray (lower right-hand corner by the time clock) selecting the "Recording Devices" option to open the audio control properties window and leaving it open during audio streaming elminated a lot of the noise previously present.


3. A few users found that turning off the Indexing Service in Vista helped to minimize audio noise as explained in this video tutorial: http://line6.com/community/docs/DOC-1490


4. Also, one user was able to almost completely resolve this issue by downloading an AMD USB Filter Driver which you can find here: http://download.cnet.com/AMD-USB-Filter-Driver/3000-18493_4-202571.html