How to change the 'Add Album' label to 'Add Project'

Hi there I’m trying to update the navigation labels in rtMedia for when a user is creating a new Album and uploading content. I’d like the Add Album menu item to read Add Project. I have tried setting new defined terms in wp-config.php as discussed here: but unfortunately that doesn’t seem to update the navigation menus as shown here:

Any help on this topic would be appreciated. Thanks!