Record All MediaElements/Sounds in a Page (Windows 8.1 Store)

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C#

Windows

XAML

Win8

I am making a music based app. The app has the functionality of playing a music from the music library of the user and the user has a chance to play different type of instruments i.e. Drums,Piano parallel to the music being played.

What I want to do is, start a recording session and record both the sounds being getting out of the music app i.e. The background song together with the drum sounds that the user is making.

How do I do that in C#/xaml?

I have been searching for a past 2 weeks but didn't find anything useful. Please Help me :(

Thanks