How can I play a flash video file on psp ?

i recommend you Leawo Video Converter which can convert videos and audios with video editing fucntions. leawo video converter is an all in one video converter which can

1, Convert videos and audios between popular formats: AVI, MOV, MP4, MPEG, WMV, MOV, DivX, Xvid, VOB, ASF, MPG, MP3, WMA, 3GP, RM, RMVB, DV, TS, etc.

2, Burn videos to DVD with DVD menu. First, use Leawo to convet video to VOB, then use free star burn ( www.flash-video-mx.com/starburn/ ) to burn the VOB file to DVD.

3, Crop, trim and merge video files. you can download Leawo video converter here------http://snipr.com/flv-converter/

when i got my psp chord it came with a media manager and when you put video files on your psp it converts them first i think to mpeg-4 files