[LeeH]

I have an older Dell computer running Windows 7. I have a splitter plugged into the sound output. One side of the splitter goes to a Dell 5.1 system. The other side of the splitter goes to a Plantronics audio switch. The switch directs the sound to either a pair of headphones (Bose noise cancelling) or my stereo.

Sound to the Dell 5.1 system always works. Sound to the switch works on some things, but not others.

Sound from Netflix always works to everything - the 5.1, the headphones, or the stereo. Youtube seems to be hit or miss. The audio from some videos plays on all of my devices, while others will only play to the 5.1. I get no output to the headphone/stereo switch.

I was just listening to (streaming) an MP3 file. Plays on the 5.1, but not over the headphones or stereo.

Why is this? Seems like sound out is sound out, but obviously something changes from one source to another. Any ideas?