Fuze+ Video Requirements

What are the Fuze+ video requirements for placement of video files in the directory structures?  Must all videos be placed in some specific folder like a “Videos” folder on both internal and card storage?

My particular question is this:

       If a video file is in the root folder of a micro SD card, will it be playable by the Fuze?  

I have not found the answer to this question in the user guide (it only talks of loading video via SMC), nor on this forum, and the question has gone unanswered in another thread:

Thanks.