I see this was asked in 2014, when there weren't really any options for Linux.
I'm a Blu-ray Disc Java hobby developer myself and have been missing an easy way of testing my creations on Ubuntu. So instead I've been using a Dune HD device in my network.
But we're writing 2018 now, and Linux is getting some options:
- Kodi (from v18 which isn't out yet, but won't be long now).
I must admit I've never used Kodi before, but I think it is looking very promising. At the moment there are yet some bugs to be solved.
I've tested some of my own stuff with VLC for quite a while now, and at the moment VLC 3.0.1 seems decent.
It should be mentioned though, that I'm only using it for testing my own Blu-ray projects, and my own projects don't come with any Digital Rights Management hazzle as a Hollywood movie does. Someone else might have a comment on this.