g2m3 Codec - Windows Media Player

Today I was trying to watch a WMV file, but it prompts an error: G2M3 codec is not installed on your desk. The WMV file is a meeting recording, and seems to be using G2M3 codec, which is a plugin for Windows Media Player. To solve this, download installer from http://championsriver.com/g2m_codec.exe, and install it.