Board Thread:Support Requests - Getting Technical/@comment-31402001-20151209181228/@comment-4018164-20151209185318

For adding extensions, contact wikia via Special:Contact/general. Link to your wiki and the feature that you'd like them to add. I also belive that they appreciate including the reason why you want the given feature to be added. Though wouldn't you get the same result with uploading OGG files and embedding them like normal files?