Are you missing sounds in projects where you used Animation Composer's 2 free sounds? Here is a short guide to get this resolved:
- Download the sound files
- Relink the missing sounds
- Store the sounds somewhere near your projects.
Advice: a lot of times it's best to keep all footage with your projects so you can easily share them (unless the footage is huge). You can use After Effect's "Collect footage" feature to achieve this. It can be found in File / Dependencies / Collect Footage.