We normally recommend this player VLC - (click on link). Else get Perion though VLC will play all video & audio files you find on gnutella network. If VLC cannot play it then it's probably a dud file.

And yes, be wary of spam. Some tips: Movie download issues (click on blue link) (2nd last post has information on best video formats.) and Virus thread: Typical virus spam file sizes - Make a note of them (click on blue link to see).

BTW no need to double-post, your post will be seen.