Well I wouldn't call myself famous LOL
but glad to help out. I hope it works out for you.
In goldwave click set control properties
and there you can select your recording device in the tab that says device.
There is also a cheap and easier way of recording your own playback from your PC.
You can buy this very inexpensive audio stereo aux cable male to male
You know on your PC where you have the audio jacks (on the sound card) in various colors?
One is out and the other is in? Plug this cable into both.
In laptops it looks like this
With that cable you can record your PC's sounds and music; so you can literally watch any music video on youtube and record it and save it as an .mp3
With no finger prints attached.