Last updated October 16, 2026
A pack of many files (a ZIP in folders) goes through the Pac Builder: open the product in the Product Studio and choose its Pac Builder section.
- Drop a single file, a folder or a whole ZIP. Every file is checked to be what its name says.
- Review what AutoStacc suggests for each file (kind, instrument, tempo, key) and keep or change it.
- Arrange folders, add a read me and up to three preview clips.
- Publish. A clean version goes live at once; one with something flagged waits for AutoStacc's review.
Updating a pack
Upload the new version and it's matched to the live one: unchanged and moved files keep their details, and only changed files are uploaded. Buyers keep files you removed or replaced for 30 days.
Sizes
One file in a Pac can be up to 4 GB. Everything counts against your storage, including replaced files during their 30 days (Storage and limits). A version can sometimes wait for next month's processing allowance; the Pac Builder says so when it does.