If you had an external CD player, and the appropriate cables, you could do it- I dont know about using the internal one though - just trying to offer an alternative
here's how. using the internal burner on the vf160, import the audio via the load function. then save/burn this new program as a wav file, onto a different cd. insert the new burned wav file cd into the machine and import it as a wav file into the existing program that you want to add it to, but keep tracks one and two open on the existing program because that's where the vf160 will put them. if there's stuff on 1 and 2 it will be overwritten. voila!! there you have it. works like a charm. then delete the audio program you imported off the audio cd -- it's no longer needed.