I have my headset plugged into the USB port behind my computer.  Playback and speech both play through the headset just fine.  I am trying to get the playback to come through my external speakers.  I have tried setting the option in the CFG audio from my headset to HDMI audio, Hidef audio etc and everything I choose plays through my headset.  Is there a way to play the commands, cabin crew announcements etc through my external speakers and just speak through my headset?

In your Windows Control panel, are your speakers your "default" playback device.

I suspect they're not.

Please ensure they are.

Then, in FS2Crew, select the Audio Device for your headset on the CFG panel, then press HS on the Main Panel.

That should route most of your FO audio through your headset.

 

On my setup (speakers and USB headset), the majority of the sounds go through my speakers, and have the FO audio coming through my headset.