Steve, I think you are probably correct. I will not bother to zip up audio files from now on. David From: ebooktalk-bounce@xxxxxxxxxxxxx [mailto:ebooktalk-bounce@xxxxxxxxxxxxx] On Behalf Of Steven Bingham Sent: 12 October 2013 16:17 To: ebooktalk@xxxxxxxxxxxxx Subject: [ebooktalk] TECHNICAL ISSUE Hi all and in particular David I am not sure of the validity of zipping audio files. The saving in file size and consequently up- and down-loading times is very small while the time to zip and unzip the files is quite considerable. So unless it is done to save space it is not worth doing - unless of course the book is in lots of small parts as with some CD transfers. Steve