...
Note that it is not necessary that you use the Multimedia Manager for this. If you prefer, you can manually name all of the media files, and put them in the correct file path. However, we strongly suggest using the multimedia manager as it minimizes the risk of confusion around names of files. Before you use the multimedia manager, make sure that you have followed Step 1 for all files that you want to upload. For example, if your application will will have 15 images and 10 audio files, make sure that 25 separate file paths have been generated.
You can find the Multimedia Mangaer for your application on the main application settings page. Scroll down and after clicking on "Multimedia" you will see the following:
...