Issuing the Same License for All Digital Media Files
Just as a single key can unlock more than one door, licenses can unlock more than one digital media file. You can issue one license for each digital media file, or you can issue a single license for several files. For example, you could issue a single license for all of the songs on the same album, or you could issue a single license to unlock all of the digital media files in your subscription service.
When using a single license for multiple files, each file must use the same encryption key. You can specify this key when you package your files. However, you can achieve greater security when you use a different key (and therefore a different license) for each file.
See Also