audio cd 4 track

[oscar64e]

as we know when record audio CD will have 2 track L/R , so how i can record 4 track to play it on airplane spacial player for the passengers generally ( how i can record audio CD i can use it on airplane player : 4 track stereo 8 track mono ) thanks

[Spoon]

It was part of the Redbook standard that there could be 4 channels (with half the bits), not sure which programs will write that though, it will be very specialized as it never took off for the comsumer.