There is only one file type that uses the .MEGA extension:
Megacubo XML Metafile
TV channel data file used by Megacubo, a program used for streaming IPTV (Internet Protocol TV) stations; saves information about the stream, such as the channel name, a description, and the connection URL; allows TV station presets to be saved.
Many different free IPTV channels are included with the Megacubo software installation. Others can be downloaded from the Megacubo website as channel packages (.MCP files), each of which contains multiple MEGA files.
NOTE: Megacubo is localized in Portugese.
Updated: May 27, 2013