(11/06/2010 11:53 PM)Vegetano1 Wrote:  Whot's the file extension for vorbis?

Almost always .OGG if just the audio alone.  Also used a lot in these MKVs you find on the internet (which are generally either vorbis or AAC).

(11/06/2010 11:53 PM)Vegetano1 Wrote:  

soo,. whot's this .OMG format do?

You mean OGM?

OGM is the multimedia version of OGG that stores not just audio but video, text and other stuff.  It's atually an old hack version, these days, you should use the official OGV instead.