Timing out when downloading chunks of recorded calls - is there an easier way to download the mp3 of these calls?

We need to archive all of our recorded calls from Ringcentral since we want to hold on to them for longer than your web system. When I download from your site if I select more than 400mb worth of calls it will timeout so I have to select smaller chunks of time. This is very time consuming. Is there a better way to receive the mp3s of recorded calls so we can put them into our own database using your API? Also, is there a better way to access these files, like through a sftp server?