Here's a link to that:
https://www.amazon.com/3-5mm-Audio-Splitter-Speaker-Headphones/dp/B005GNQNHU
Unfortunately, some sound cards are set up so they won't play the two sounds at the same time....Plus it also depends on how you're plugging in your speakers and headphones. Are the speakers plugged into the rear "green" jack? Are your headphones plugged into a USB jack? Something else? Here, if I plug in my headphones to the front green jack and the speakers are plugged into the rear green jack, they both play at the same time. But my "Sound" properties only show a speaker icon. No headphones because I've never installed a separate headphone setup.
Another options, the following steps have allowed folks with unsupported sound drivers to use both at the same time, although there is frequently a lag between the headphone sound and the speaker sound. It's your choice. Set your speakers as default playback device. Next, in recording devices, enable Stereo Mix. Set Stereo Mix as default recording device. Go to Stereo Mix properties, "Listen" tab, and choose "Listen to this device" and set your Headset as the default playback device.
Hope this helps.
Grif
The sound in my computer will not come out of my speakers, only my headphones, unless I disable my headphones no matter which I select to use. I have tried putting both of them as my default, but the problem still persists. Is there a way to fix this? Because it is very annoying having to disable my headphones every time I want to have sound come out of my speakers. Thanks in advance!

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