I have added another category in freewardchoirmusic.com. Now you will be able to download prelude and postlude chains that run smoothly from one hymn into another. You can start at any double line and end at any double line. Also, you can start again at the beginning after the last hymn if you need more prelude time.
The first prelude chain is ready for download. I am working on a postlude next. Then I will post Christmas prelude and postludes.