From the My Videos dashboard, click to edit the video whose source you want to change:
Go to Video Settings >> Replace Source URL:
You can either add a new URL to replace the uploaded file, or upload a new file. In this example we will upload a new file. So click on Upload Replacement Source here:
Then click on Upload File here to take you through the same steps as if it's a brand new Spotlightr video"
**NOTE** If the original video is a linked video you can only replace it with another link. It will look like this: