Speaking of Hi-def on your computer, the above link is a pretty good FAQ about it and some of the interesting edge cases that occur with DRM.
For instance, you would expect a movie trailer to play forever, but in cases where the movie studio has licensed music for the trailer, they may only have those rights for 60 days, and so to keep to that contract, a downloadable version of the trailer has to stop working after 60 days.
There is no special message when the trailer stops working - it just stops working with an obscure error code.
The biggest problem I have with Microsoft DRM at this point is the error messages - they need to provide a lot more insight to the end user if the end user is going to have a clue what is going on with their licensed material.
Often the internal error codes are nothing more than a brief hint at the problem:
One or more backed-up licenses are missing or corrupt.
What is a person supposed to do with that information?
© 2005 Stephen Clarke-Willson - All Rights Reserved