I came here because my Realtek audio won't allow me to use my headphones and my speakers.
I have two audio devices, my speakers and my headphones. My USB dongle for my headphones broke and I had to get a female to male 3.5mm jack to replace the dongle. Now I have two 3.5mm jacks plugged into two ports and Realtek HD audio only recognises it as one device and doesn't allow me to split the audio. My front audio panels don't work for whatever reason. (I've plugged them into the right ports, I believe they are broken. Any help would be appreciated. My drivers are up to date as well.