MiniMX - Create a collection

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Hello.  I have the MiniMX connected by HDMI to a 5.1 sound decoder but I only hear a 2.1 sound.
I set "enable passthrough" and "5.1" at "Audio Output".

Another thing: How can I create a collection and see the covers? I upgraded to the latest version of LibreELEC and catalog disappeared....

Thanks.

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5.1 audio solved: there was a problem with my sound decoder .

I still don't know how to create a collection to see covers, info,...
Can anybody help me?

[futeko.com]

I may have misunderstood, but this is how to add videos to your library in Kodi:

http://kodi.wiki/view/Adding_video_sources