The WordPress Video Shortcode (what File Away uses) supposedly supports FLV playback, but I tried FLV videos in Chrome, Firefox, Opera, MSIE, and Safari, and it wouldn’t play in any of the browsers, so I removed FLV from the available options. If you want to try it for yourself to see if you can get some working, you can make a small change to my source code. Go to:
wp-content/plugins/file-away/lib/inc/inc.flightbox.php
and go to line: 25.
Change:
elseif(($flightbox == 'multi' || $flightbox == 'videos') && in_array(strtolower($extension), array('mp4', 'm4v', 'webm', 'ogv', 'tube', 'vmeo')))
to
elseif(($flightbox == 'multi' || $flightbox == 'videos') && in_array(strtolower($extension), array('mp4', 'm4v', 'webm', 'ogv', 'tube', 'vmeo', 'flv')))