Today I just noticed that I can embed ISRC codes into mp3 files but not AAC.
I wasn’t sure if AAC supported ISRC but when I loaded the AAC files into Sonnox Codec Toolbox Manager it allowed me to fill in the ISRC codes on the AAC files.
Am I missing a preset in Wavelab for adding the ISRC codes to AAC files or does Wavelab just not support this?