The easiest way to backup files in bulk is through the podcast. Each Playlist you’ve created has it’s own podcast links, you can access these on the Playlists page within your Studio in the RSS section.
Use iTunes to subscribe to the podcast, you’ll see this option under the File menu in the upper left. You’ll then go to your Library under Podcasts, and click on your podcast on the left navigation menu. It will display the details and all episodes in the main window, along with the title at the top you’ll see a gear icon. Click this and change the settings to the following:
Limit Episodes: Off
Download Episodes: On
Delete Played Episodes: Off
You can click the “Feed” tab to see all of the episodes that are available. Right click your podcast title and choose Download All, and iTunes will begin downloading all of the files. It may take some time, and when it’s complete I would suggest scrolling through the feed and manually restarting any files that still have the cloud/download icon next to them.
If there is anything else that we can help with please let us know, happy to help.