Use three simple steps to play your own file:
If you are happy with the way Coria allows you to practice this song, you can make it available for others. Download the piece as an HTML file and publish it on a website, for example the website of your choir. The details depend on the setup of the website.
If you plan to publish a piece it is useful to enter the information about the piece (title, names of the parts) as much as possible.