Adding audio out to a cheap dock.

I bought this dock... sorry about the blurry closeups.


And I want to add one of my extra headphone dongles to allow for the sound to be ported into my computer. To allow the ringer extra volume.. But the problem is that the dongle wont fit in the mini usb port on the dock.


DOCK

DONGLE

So what I wanna do is splice into the dongle and solder a extra wire on that fits in the dock port. I have a extra mini usb extender cable that I can use.

And here is the plan...



Anyone have any objections? Or do you think it will work? I don't wanna fry something by attempting something that has no chance.