[Vorbis-dev] Java and ogg/vorbis

[Charles]

I am a bit confused to how Ogg/vorbis works. This is my understand. 
Vorbis is an audio codec that can be used instead of MP3 and it is open 
source. If this is true, what is Ogg? I think it is some kind of wrapper 
that allows you to stream Audio and Video. Am I right?

Also I want to encode short videos in Xvid and then encode the audio in 
vorbis. Then I want to stream this over the Internet using a Java 
applet. I will need to implement the vorbis and Xvid decoders in Java as 
part of my applet,  but where can ogg help me in this little ( or is the 
word confusing) project?

Thanks

Charles