As to the MP3 player see if you can set it to a MSD https://www.techopedia.com/definition/11901/mass-storage-device-msd rather than a playback device.
I have a HP Pavilion dv6-6163CL laptop with Windows 10 Pro x64. I connected a MP3 player model YT-03 like the one shown in this picture: https://prnt.sc/mql1k7 and what happened next is that my laptop recognized it, installed the drivers automatically and when the set up was done, my computer's audio went off.
I checked my system's sound and it wasn't mute, then opened Youtube and even played a movie with VLC player but still, no audio. When I decide to unplug the mp3 player from the USB port, the audio came back on.
Even though my laptop recognized the mp3 player, it was not visible on "My PC": https://prnt.sc/mql76v .
A curious thing about the mp3 drivers: when I am checking those on the device manager console, it recognizes the mp3 player as the "D" unit in the "Portable Devices" section and as "Speakers (CD002)" in the "Audio inputs and outputs" section, at the same time. Check the following image for reference: https://prnt.sc/mql6x8
Then, using the Device Manager console I tried to scan for hardware changes, disable, enable, update, remove and reinstall both drivers, but still having the same issue recognizing the device without being visible and my laptop's audio going off.
Any suggestions or help for this problem will be highly appreciated.