Two ways i use to change the view one is to hold down the ctrl key and press or key and hold down the ctrl key and roll the mouse wheel back or forth might also check the resolution setting for the display.

Linux mint 20 1 win10prox64 new 17 jan 2016 4 unless you are feeding the audio to an hdmi port or in some mb there an optical jack then you would set to digital output to feed the audio to the speakers right click on the speaker icon play back devices and set speakers as the default device.