You have the possibility to edit a media file according to your preferences.
In order to do this you can click 'Edit' next to the selected media
Or select media from overview
And then click the 'Edit' button on 'MEDIA ITEMS DETAILS'
Now you have the possibility to change the name of a file, replace the file and select/deselect MULTILINGUAL and DOWNLOADABLE features. The downloadable feature is in the process of implementation
If you want to replace a file, you will be asked to select a new file. It's worth knowing, that the type of file for replacement must be the same as the replaced one.
If you want to save changes you need to click the 'Save' button. If you want to reject changes, you need to click the 'Cancel' button. After saving, changes are immediately visible on the detail page of a changed item.