I have a problem similar to what i have seen on other threads.  I cannot get audio on any computer (and these computers are on the same network as my slingbox).  I have my DVR/Satellite receiver audio running into the slingbox and then to my TV.  The sound is fine on the TV which says it's going through.  The video is great on the computer, just no sound.  Other computer sounds are fine.  I reran the setup and verified that the volume is turned up.