Hi,
please check my previous work, feedback and consider my bid. I have done this task before for pre-Win10 systems ( XP, 2003, Vista, 7 and 8 ). The method used for audio capture in modern OS'es ( Vista+ ) should work on Win10 as well, but it is a subject to verify and enhance the solution if needed.
Regards,
Dmitry
Upd. : Yes, solution is working on Win 10 ( with minor code changes )