I tried CMS Xibo 1.7.5 on Linux and I find it really good.
Let me suggest a few tips that may be optimal for a better functioning:
In layout design, especially in the timeline, it would be convenient to be able to move the media into the “grid view”;
When editing videos I find the tick in his voice: “Off - It should be turned off the video?” as if it was active.
It would be convenient to be able to activate or deactivate the average sound somewhat dedicated voice in the “grid view”.
Ps : to mute the sound of the video I have to remove the check mark, save the video, replace the check mark in the item specified above, and re-save the video;
It may be convenient, in the “Video Edit” window, replace the media with some other library content;
The Xibo administration on smartphones is not completely responsive and often can not handle some windows
These are some tips to make it even more valuable a product already outstanding.