On my quick listen these were the only clear differences I noticed:

The Imperial fleet establishing shot after the magic tree scene has a different TIE fighter sound effect. (Can also be heard on the foreign GOUT-tracks, SE have the music as originally composed for the scene)

In the final scene, there is no tracked music from "Yoda and the Force". The scene begins with the first establishing shot of the rebel fleet, then cuts inside the Falcon for Lando to say, "Luke, we're ready for take-off" (but a different take of this was used). After Luke says (voice over), "Good luck, Lando" the scene cuts to inside the rebel cruiser where Luke says, "I'll meet you at the rendezvous, " etc. Not in this version are two more establishing shots of the fleet and an interim effects shot over which Lando says, "When we find Jabba the Hutt and that bounty hunter we'll contact you."

Also, C-3PO's line, "Now remember, Chewbacca, you have a responsibility for me, so don’t do anything foolish" appear to be mixed as loud as on the '97SE. I'm not entirely sure about this one though as the audio levels on this recording can fool you easily.