In even simpler terms....
It lets you multi-task while burning a cd without worrying about making a coaster (i.e. a bad burn)
The biggest problem with early cd burners was that if you did much of ANYTHING with the comp while burning, the data pipe to the burner would fill up, and the burner wouldn't be getting any data...so it would freak out and ruin your cd-r
with burnproof, the burner "waits" till problems are cleared up...and then automatically continues