JPG: About the iFunbox update it does says support for 8.3 but it does not work the same way as it use to, its only a partial fix, allowing all apps with "iTunes File Sharing" enabled to be opened for sandbox browsing through the utility. Basically the same as using iTunes as my first post.
Gert van Zyl: Use the module converter for all files, there are some files that won't be done right, the ones with strongs for example and those that are original won't convert at all. All the others convert with no issue at all (that I'm aware of). After converting the files follow the method I post, it does work. I have not tried it on PC though, I use Mac. Make sure you drag the converted file and not the original, that one won't work.