A:AnswerYou can link two of them to your PC/Mac if there are enough ports on your PC/Mac. It's not possible to have an one-cable solution though. i.e. you cannot daisy chain the monitors and then only use one cable on your PC/Mac. Only very few monitors support daisy chain as it requires two thunderbolt ports (not just usb-c ports). Personally I would use two usb-c cables to connect each of them to my laptop because docking stations tends to be a mess. You also get all the usb-a ports on the back of the monitors to connect to your laptop this way.
A:AnswerThank you for your question! We cannot speak directly to the features or quality of third-party solutions, but if the speaker system you wish to hookup has an HDMI, USB-A, or USB-C connection, you shouldn't have a problem connecting to your monitor.