Advice on how best to deliver mp3s to my subscribers

Hi guys

My subscribers will receive a mp3 podcast each week; to handle my subscriptions I’m using Membership 2. How should I best deliver the audio in such a way that it’s user-friendly, easy to track and can be automated?

There are a few ways we can do this. (Sending by email (Mailchimp?), sending a download link by email – using a service like WeTransfer for instance – uploading the files to FTP). Which do you suggest for delivery of an mp3 to multiple subscribers?

The down side of using a service outside of WordPress is that files won’t show up in the subscriber’s account area on our site.

Any suggestions?