CL5
From Just Solve the File Format Problem
In 2001 Adaptec spun off their digital media division as Roxio.[1] Easy CD Creator software allowed the user to create a Data or Audio CD layout by adding files or music in order to burn a disc. This layout could be saved for later use. The layout only referenced the file location and not the files themselves.
File Identification
CL5 file format was changed from the earlier format used in Easy CD Creator versions 2, 3 & 4. New format is a proprietary binary file and is similar to Roxio Creator NXT 6 RCL files[2].
Files begin with hex values 10 00 00 00 01 00 00 00 01 00 00 00
for the first 12 bytes. Files end with 4 bytes FF FF FF FF