You might want to try the Wavelab Elements demo, or full version demo (full version demo requires your elicenser I think) to see if the new version will do what you want out of the box. I’ve never tried recording streaming (I guess you’re talking about playback from youtube, itunes, internet radio and the like (?), using built in audio on a laptop, but if it can’t be routed and configured to work with Wavelab 4 or 5 using the existing hardware, I don’t see why it will necessarily work with Wavelab 8 without the same configuration.