Built-in PC device

Hey. I hope you can help me. I use a player with an ASIO driver, but sometimes I need to listen to music using the built-in PC device (mixing with the rest of the computer sounds). How can I configure this?
Wasapi doesn’t work as I need (it works like ASIO in exclusive mode)
But I need shared mode
Sorry if I duplicate the topic

Hello @Eugene_Kukharsky, this kind of feature is not implemented in ASIO mode since we use all of the audio capability of your computer.

I understand that with ASIO it is not possible. But how to do it with WASAPI?