samplitude studio 6.0 will do this for you.. I like it a bit better than SF7 but am just more familiar with SF. so I use for all other mastering
just go
file > New virtual Project (select how many tracks,sample rate) >then select one of the project boxes. (it will put an orange outline on which box is selected.) >open your first track.
Then select the other project Box and open your second track. and wammo your off an running.
should be able to handle it from there.
LMK if ya need furthur help. although I have not used it a whole lot so Some of the ?'s I may be able to answer and some I may not.
Nick