If you search the files area of this site you will find that there are a couple of downloads for the Sony STR-DE875 that may assist you.
And by the way, you have posted in the Intermission forum. Here you are more likely to get your leg pulled and receive advice that you did not expect; often not related to the question you asked. So you may also like to try one of Remote Central's more serious forums.
I knew this was a mistake; my grip on reality's not too good at the best of times. Glitz, in "The Ultimate Foe"