How can I play a FLV file in Windows Media Player?
Solution 1:
You should try ffdshow - Media player may still give you an error, but it should play the file with no problem. Also, are you positive media player is completely updated?
Solution 2:
if you must use WMP, then you'll likely have to install the codecs for it. I strongly suggest using VLC player, it just updated to 1.0 and has always worked for me with .flvs