[ubuntu] mythtv installation question

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http://ubuntuforums.org – Hi Community: I want to install mythtv.... There are alot of old suggestions on how to install (2 years old and older), and stuff from countries that I don't live in (my understanding is that some stuff works in some countries, and some stuff doesn't). Can someone kindly guide me to a recently developed and good installation guide for instaling Mythtv on 12.04 Unity? I live in the USA. Thank you! Old Jimma (Hardware)