Where is that Wedge voice from? Is it the original audio?
Yes, it’s Denis Lawson’s original performance. I found it in Bobson Dugnutt’s SW: Leftovers video.
The first post in that project’s thread (linked above) gives a list of sources used, though I’m not sure which one that particular clip came from.
Lawson is actually Scottish, so he was putting on that English accent for the role, only to be dubbed by American actor David Ankrum anyway.
I believe Lawson has since voiced Wedge himself a few times, putting on a US accent for those performances.