A method and apparatus for enabling a licensed end user to record digital
data as described is particularly useful to the music industry as it
enables them to make audio data available over the internet but to retain
control of the uses to which that audio data can be put. Thus, upon
completing a financial transaction to pay for the required audio tracks,
the end user is enabled to download and decrypt encrypted music tracks
and to play them on the end user's personal computer. The end user can
also be allowed to burn a CD including the downloaded music tracks.
However, the end user is only enabled to decrypt and record the music
tracks onto the CD if the music tracks are recorded together with copy
protection.