Thank you for your interest in my audio rendering problem, but I have decided, for the time being at least, to let matters rest where they are, for now. The problem seems to be one that, even with your help, Mr. Fierlinger and slowtiger, that I am not able to deal with as I do not have the technical knowledge that sound files and their editing and rendering apparently require. I have fiddled endlessly with various settings and configurations but, whatever I do, with the exception of QuickTime, the sound plays back too slowly. I tried what you suggested, Mr. Fierlinger, and while in Mirage the WAV file plays fine but on rendering, at whatever output settings, the sound is consistently too slow. A couple of times Windows has got huffy about it all and shut down. I have installed Reaper which claims to be professional level audio software. When I try to configure it, it seems my system lacks the ASIO drivers which it prefers for its ideal configuration. Should I download and install these drivers. Will it make a difference? Will I only create problems elsewhere?I don't know. When I select my SoundBlaster X-FI ExtremeAudio card as the default within Reaper, I have imported a WAV file and rendered it numbers of times at various project and audio settings eg. playback resample modes, taking care that they are within the 48.1Kbps, 16bit range, they always play back too slow. So, for the sake of blood-pressure and sanity, and life being too short, I have decided to leave things where they are. For the present. Pixar can sleep securely at nights. Thank you.