X2X Free Video Audio Merger is a fast video and audio merge tool. It could join video files into one whole MP4 or AVI file for free or join audio files into one whole MP3 file for free. You can use X2X Free Video Audio Merger to input AVI, MPG, MPEG, MP4, WMV, ASF, MOV, QT, 3GP, 3G2, AMV ,RM, R …