audio/video files

yo there,
ive got some audio video files , and i dont have the codecs for them , can someone help me out:
.zgf
.tex
.sup
.snd
.sgp
.rmi
.rmc
.prm
.oct
.loc
.gms
.buf

If anyone can find data about these extension please email me ASAP, These are all part of a multi file video, and Im trying to put em together, to see the video.
Thanks.