For those that may not have heard of it U-MYX was a software prog that allowed a user to arrange and create their own mix of songs by known music artists using stems encoded within the file.

As far as I know there is not a prog or a way to rip the stems and save them but you guys may no different?

The other alternative.
I am using a laptop for this so no sound card but is there a virtual audio mixer or router that can take the sound output from the U-MYX prog and route it as an input to Soundforge?

The idea being to play each stem solo'd and record that playback in real time in Soundforge.

Yes it is time consuming but some of the U-MYX tracks are not available on the net as stems.