People often ask how long their CDs will last. This recent article on NPR (National Public Radio) addresses the problems of maintaining a CD collect. They interview people from the National Archives who are finding that some prerecorded CDs from the 1990s are already suffering from they call “CD rot.” CDs that are recorded at home are even more in danger of being unreadable in the near future. I usually record two copies on CDs and then when one copy is unreadable (and they have been), I then make a new second copy.
The NPR article is both a text webpage and also has a link to the 4 minute radio article.