How to make Airtunes play all sound on itunes and more?

[zxcvb]

I realize that my airtunes can only play sound from my music lib. When I play movies on itunes, airtunes cannot stream it.

so my question is how to make very sound on itunes to be streamed via airtunes. or it would be even better if Airtunes can stream all system sound.

Is there a software could do that?

 

[cherry su]

you are looking for Airfoil, written by Rogue Amoeba