I've had problems with the 4-speaker quadrophonic audio, especially when playing a You-Tube video, or also when playing songs in .wma format.
The problem is that I cannot get the rear speakers to play........I have a Realtek ALC887 and used the Realtek software to configure the system for quadrophonic sound. Using the Realtek software, I can hear the sounds from all 4 speakers one-by-one as the software does a sound test.
But, when I play a You-Tube video I only get sound through the 2 front speakers, and not getting any sound at all from Windows Media Player, which actually starts to play a song, but has no sound at all, and under the "play-to" button, the drop-down shows "No media devices found".
Need a strategy to troubleshoot this..........might be 2 separate problems 1) no sound from Windows Media Player and 2) only front channel speakers from You-Tube.