This article explains how to setup the Dropbbox integration.
Step 1 - Log in to Your Dropbox Account
Step 2 - Add Folders to Dropbox
Add two folders to your Dropbox. 3play_upload and 3play_deliverables
Step 3 - Log in to 3Play Media Account
Open a new browser window and log into your 3Play Media account.
Step 4 - Link Dropbox Account to 3Play Media
After logging into your 3Play Media account click Upload Media located on the My Files page.
By default you will be directed to Upload > From Computer.
After clicking Upload click on Cloud Storage and from the drop-down menu that appears click +New Linked Cloud Storage Account.
Select Dropbox from the menu.
Your account should now be synced. Select your favorite format, and whichever format is chosen, will be uploaded to the 3play_deliverables folder, in the linked Dropbox account.