create a dir in MOSSYS:Ambient called filetypes..

Save this as "AVI_Videostream"

AMTD
1
Name Audio Video Stream
Type video/avi
Match
Name #?.avi
OR
Name #?.mpg
OR
Name #?.mpeg
OR
Name #?.ogm
OR
Name #?.wmv
End
Action
Name Play with MPlayer
Event DoubleClick
Command AMIGADOS work:gfxtools/mplayer/mplayer %sp
End
Action
Name Play with MPlayer (no overlay)
Event Menu
Command WORKBENCH work:gfxtools/mplayer %sp CGX_MODE=VMEM
End
Action
Name Play with MPlayer (captions)
Event Menu
Command WORKBENCH work:gfxtools/mplayer %sp -vop expand=0:-100:0:50
End
Action
Name Test envvar
Event Menu
Command AMIGADOS echo $somename
End
Action
Name MD5
Event Menu
Command AMIGADOS ram:clip 0 `gg:bin/md5sum %sp`
End
End





and for "LZX_Archive"

AMTD
1
Name Archive
Type archive/lzx
Match
Name #?.lzx
End
Action
Event DragNDrop
Command AMIGADOS lzx x %sp
Flag cd destination
End
Action
Name Open
Event DoubleClick
Command INTERNAL loaduri vfs:///%sp?type=xad&mode=list NEWWIN
End
End




change them and make more to suit your needs.