As stated two posts before, I just renewed this thread in the Art section and posted a couple more attempts for the covers:
http://originaltrilogy.com/forum/topic.cfm/J-Williams-LSO-The-EMPIRE-STRIKES-BACK-Restored-Score-the-AUDIOPHILE-EDITION-Covers-Documentary-Booklet/topic/11184/
Now we can go back on music and sound.