The Capacity graph in the Dashboard is for general informational purposes only. There are two separate portions of the My Cloud OS at work here. First is Twonky Media Server and its categorizing of media files for DLNA clients. Second is how the Dashboard Capacity graph categorizes files. While the Capacity graph may sort certain files “wrong” it may be doing so because the file type is not recognized by the My Cloud OS firmware. The Twonky Media Server is a separate service running within the My Cloud OS and should stream to a DLNA client any media file it supports regardless of how the Capacity graph lists the file.
There is a bit more discussion on the Capacity graph in the following thread.
https://community.wd.com/t/dashboard-breakdown-explanation-of-other/140624/5
