The last USB fobs I bought were off of ebay direct from China. Not a huge fan of buying this way but they were cheap enough that I was able to buy a stack of them before I found one that worked and then bought in quantities.

These two current auctions are from sellers I've used in the past: 
     http://cgi.ebay.com/7-1-Channel-USB-3D-Virtual-Audio-Sound-Card-Adapter-/370416377001
     http://cgi.ebay.com/USB-2-0-3D-AUDIO-SOUND-CARD-ADAPTER-VIRTUAL-7-1-ch-/250537558990
It has been several months since I bought any and hence their current stock could be using a different chipset.


And the instructions I used and created to modify these specific sound fobs  is here:
  http://m3h.com/usbfob-119.pdf





Mike


------------------------------------------------


> Date: Sun, 8 Aug 2010 10:58:31 -0700 (PDT)
> From: Keith Dobbins <dobbins125@yahoo.com>
> Subject: [App_rpt-users] (no subject)
> To: app_rpt-users@qrvc.com
> Message-ID: <637570.7365.qm@web112112.mail.gq1.yahoo.com>
> Content-Type: text/plain; charset=us-ascii

> Anyone have a current source for the c-media usb sound fobs? The last 4
> sources including deal extreme that says it's a cm108 fob all have used a
> generic chipset or the sss chips. Just looking and getting frustrated.
> Thanks!