When two hymns have the same title, the audio file is frequently associated with the wrong score, for example, in "City of God."
Thanks for pointing this out. Apparently the batch upload process used to bring in all the Zion's Harp midi files disregarded the numbers in the file names. It is now fixed. However, any previously downloaded hymns with incorrect or missing midis will need to be deleted and redownloaded, and it could take awhile for your app to refresh and clear it's cache before you see the correct midis.
Customer support service by UserEcho