So, I currently have a Logitech 5.1 surround sound system plugged into my sound card in my computer, and I recently got my hands on another set of nice speakers. I was wondering if there was any way to add these new speakers to the existing 3.5mm jack on my motherboard and have it mirror the output of my current Logitech speakers in Windows. I have heard of the Realtek Stereo Mixer, but if I choose this option it will not allow me to use my soundcard which is less than optimal since it does improve sound quality. Ideally, I would like to have both sets of speakers in use at the same time while keeping my soundcard in use. Thanks in advance.