What about surround sound?

A: Xbox Halo supported 5.1 surround sound because the Xbox hardware itself supported it. PC Halo supports Creative 5.1 surround. The Macintosh G5 has support for 5.1 surround, and there are external boxes that can provide such support for other Macintoshes. It is not yet known if Mac Halo will support 5.1 surround.