Yes, TotalMix is your friend.
Be sure that your ‘Windows Sounds’ are routed to a pair of FF’s playback channels (via control panel/sounds). I send them to S/PDIF usually as I don’t use these channels for anything else. Send them to a pair of FF’s output channels and use the loop back feature of TotalMix there (instead of hardwiring ins + outs which is a little '90s 
). Loop back is activated by Alt-clicking the labels (or maybe Shift+click - can’t try atm), they have to light up red.
The loop-back activated channels now turn into an input signal that can be used to record them in another software like Wavelab.