The way I made Audiophile is that she is able to manipulate and absorb existing sound using her body as a sort of focus for it. Like say, she is able to guide the sound waves along her body, amplify them, manipulate them, and then use them for whatever she wanted too. So, kind of like the thing you wanted to dabble in xD

If I had an old CS of hers up, I'd direct you to it but I haven't used her in awhile on here.

...but dang, I feel like I'm taking all your ideas now xD