added encryption to audio playback downloads 

git-svn-id: https://plugins.svn.wordpress.org/file-away/trunk@983318 b8457f37-d9ea-0310-8a92-e5e31aec5664
2.7.1 update

git-svn-id: https://plugins.svn.wordpress.org/file-away/trunk@983320 b8457f37-d9ea-0310-8a92-e5e31aec5664
2.7.1 update

git-svn-id: https://plugins.svn.wordpress.org/file-away/trunk@983321 b8457f37-d9ea-0310-8a92-e5e31aec5664