To add a video for Gottfried August Homilius / Choral Prelude for organ Schmücke Dich o Liebe Seele, just enter the video‘s YouTube link:
example) https://www.youtube.com/watch?v=XXXXXXXXXXX
Search YouTube for Gottfried August Homilius / Choral Prelude for organ Schmücke Dich o Liebe Seele