Can I create a product with multiple files?
Unless you are selling a software program in which you need folders to be held in Zip files, you can take full advantage of Gumroad's multifile product feature. You can also do this to create a "bundled" product of several of your best-selling products. Upload from your hard drive, or from Dropbox!
If your product consists of multiple files, simply upload them all at once, then click Add. You can rearrange or rename the files, or add more files to the product later.
Removing or updating files
You must have at least two files in your product before you can remove a file. If you only have one file attached to a product, you must add your updated file before removing it.
Learn more about rearranging and renaming files.
Here's more about updating files.