What is a lip file and how do I open a lip file?
LIP is a file used by Bethesda Softworks games such as The Elder Scrolls IV: Oblivion, Fallout 3, and Fallout: New Vegas. It contains information that synchronizes lip and mouth movements with audio data in a corresponding OGG or WAV file, and is used for animating speech with game non-player characters.
Relevant lip file links:How to open lip file on Youtube
How to open lip file on Wikipedia
How to open lip file on Microsoft.com