You’re talking about a product that has probably been sitting on the shelves for years. Its not like SanDisk takes back the products that are already in the stores and replaces the CD’s. The m200 series mp3 player is SanDisks 4th generation mp3 player, they are currently about 11 mp3 players that sandisk has made. So the way it was sent out when no Vista existed, is the same way it sits now. So although you just purchased the unit, it was probably on the stores shelf for quite a bit.
Anyhow, I digress.
Any mp3 player you purchase(that isn’t ipod) will use either MSC(mass storage class, works like a flash drive) and MTP / Plays for sure mode(computer will see it as an audio device, mostly needed for licensing and music you purchase on the web)
Computers use what’s referred to as “drivers” to recognize devices, such as printers, monitors, cameras, mp3 players, etc.
The drivers for MSC and MTP modes are suppose to be pre-loaded on any XP or Vista machine. As those drivers are property of Microsoft, SanDisk cant just put it on a CD and distribute it freely(without getting into legal matters) unfortunately, Vista has 101 driver issues and has become a bigger problem then most of us would like. SanDisk, as well as the people of this and other forums, have come up with various ways to install the drivers manually if need be.
So the only thing on the m200 CD’s that a user might consider useful, is the users guide(which can be found online) and an installation of WMP10(although most us have 10 or 11 at this point anyway.)