Unfortunate clash of acronyms: > Please enable playback of DRM protected content.
This is DRM in the sense of Digital Rights Management This depends on proprietary blobs obfuscating the secrets required to decrypt the content in order to prevent you from accessing the content directly. This can't be open source for rather obvious reasons. > In Firefox's about:config I see "drm" and "DRM", Not sure what that is, but this almost certainly related to the Direct Rendering Manager aka drm(4).
