Hello Apache060 and thank you for your interest in our Community.
By default, the ICUSBAUDIO7D will output through the front speaker ports. To change it to “Headphones”, simply double-click on the “Xear Audio Center” icon in your notification area (bottom-right next to the clock) to bring up the Xear Audio Center.
Once in Xear Audio Center, simply right-click on the “Speakers” icon (left side), select “Speaker Settings” and then from the list on the right, change “Speaker” to “HeadPhone”. This will now allow the headphone jack to output the sound as well.
I hope this helps! Please do feel free to contact us back again should there be anything else we could do to help.
Emmanuel