You coud not store program on them and people would probably also dislike that the text they just typed has changed without their doing.
Since drop-outs don't happen with any other file it's safe to assume that this is also true for audio files.
If there is a drop out the sector will be reread.
It is still a good idea to have a backup of your music archive since disc can go bad either in the filesystem structure of some hardware aspect.
Cheers
Thomas









