yeah I'm on the same boat. I just have an old laptop hooked up to the tv, which can access a shared folder on my main computer that has all the media. I control it with a wireless mouse, and get an actual fast UI with a web browser instead of the usability nightmare that is a smart tv UI. this is all Windows though, I guess it's possible to have Linux access a Windows shared folder, I've been meaning to look into it for a while