do you see the video file in a list, with extension and # of bytes listed? Is the extension correct?

if it is a simple Flash file, the free version of Zoom Player will supposedly play it.

"Zoom Player is capable of playing all common media formats and quite a few of the not so common, including:
AVI, Matroska (MKV), QuickTime (MOV), Cellphone 3GPP (3GP), Flash (SWF), RealMedia (RA/RM/RMVB/RAM), Windows Media Format (ASF/WMV/WMA including DRM with WMV Professional version), OGG Movie (OGM), MPEG-1 (MPG/VCD), MPEG-2 (MPG/SVCD/VOB), MPEG-4 (DIVX/XVID/ISO), VP3-VP6, MPEG Layer 3 (MP3), Vorbis Audio (OGG), Dolby Digital (AC3), Advanced Audio Coding (AAC), MusePack Audio (MPC), FLAC Audio (FLAC), OptimFROG Audio, Monkey Audio (APE), True Audio (TTU), Wave Audio (WAV)"