This to me makes no sense as it just doesn't follow basic physic's etc. "Audio CD players read their discs at a constant 150 kB/s and thus must vary the disc's rotational speed from around 500 rpm (actually 8 Hz), when reading at the innermost edge, to 200 rpm (actually 3.5 Hz) at the outer edge. CD-ROM drives maximum rotational speeds are rated in multiples of this figure, even though they do not hold to constant read speeds when reading from most disc formats." Surely if u drew a line from centre to out point on the disk and marked two points at either end, no matter how fast the disk is spun both points will complete a revolution at the same time??