hybrid dual mac/iso9660 are usually what u want to use in a better commercial sense.
when making a director movie presentation instead of having two copies of the same file u make a stub which directs the player from either side of the disc.
You can then place media in the form of videos sounds music and images for what ever side doesnt have the actual game or u can place both demos on wither side if u had a dual application.
its always best to monitor your filename sizes and keep em short n neat and even tho its not mandatory to watch out for spaces I still do in case u want to port the whole shebang into a live web application that accompanys the cdrom or is a mirror of it.
you will want to make an inf file to auto start the pc side, the mac side can only be started automatically if the autostart cd feature is on but a few years back that was a delivery point for a chinese dragon virus so we all switched that off, at least the ones who knew did.
The virus is not bad but annpying as hell
u can also work out the speed you really need in a general way without getting too specific
each x speed is roughly 150k/sec so if u have to deliver a fairly high quality video you would want to burn it to a faster disc than a non video type interface and simple imagery and text.
eg: 4x 600k/sec
eg: 8x 1200k/sec
it caps off tho as i think the latter drives use a buffering system in a progressive larger size to emulate
true read speeds.
as always when u burn a disc for public consumption its always best to close the disc off or finalise it.
mode2 XMA red books are usually in the form of mixed media like psx discs.
there are different formats in the form of colour book names
red book orange book yellow book
they are just formats