When multiple Motion Templates within the same product use the same file, it helps to embed only a single copy in order to reduce the size of the product.
FxFactory has a built-in feature to perform this consolidation step automatically, in preparation for release.
When editing an FxTemplates project, switch to the Assets section. Click the bulldozer icon in the bottom-right corner of the window to perform asset consolidation:
FxFactory will go through all assets in your product and remove any duplicates that have identical name and contents. You do not have to update the Media section of any templates. FxFactory will do that for you.
Please keep in mind that only files with identical names and data can be consolidated.