i know this thread is years old but its the closest ive come to this issue. i see that this seems to be the solution but i must be too new to AE because i dont know what to make of this. would you be willing to give a more step-by-step process on how to implement this?
for clarity, im looking to do something similar with audio file metadata. id like a text layer to change based on the title and artist metadata of a WAV file, as well as the album art if possible. that way, i dont have to manually change the text in the text layers, nor do i have to change the album art file. if its relevant, i use the “Replace Footage” function for the audio file, rather than importing a new file every time.