MKV Dual Audio to Single - MKVToolNix - Linux Mint 7
Matroska is a new multimedia container format, based on EBML (Extensible Binary Meta Language), which is a kind of binary XML. These tools allow to manipulate Matroska files. - mkvmerge is a tool to create Matroska files from other formats - mkvinfo allows to get information about the tracks in a Matroska file - mkvextract can extract tracks from Matroska files to other formats