Hi cachito70,
Thanks for the feedback on the PlayMemories Home software. We're always glad to hear about what our customers think we could do to improve our products and services.
Since the Hide Media File function has been removed from the features of the program, I suggest using the Add/Remove Folders option instead. You can put the files that you don't want PMH to manage on a single folder that you can then add or remove from the software as to your preference.
If my post answers your question, please mark it as "Accept as Solution". Thanks_Mitch