Playing smr files

Hi.

Id really appreciate a little advice and probably patience too....

Trying to playback several smr files on windows xp. Got the codek and installed but im getting nothing not even sound just a few seconds of green at the beginning then blackness. The time, framerate and resolution display ok but jsut no playback.

Ive done quite a lot of farting around but am now stuck. Any advice?

Ta.