We've just released the new 3.7 version of our quick and easy lossless video editor! You can edit video files with up to 4 audio streams, and add up to four audio streams to a video file.
Also, with Machete 3.7 you can remux your video files (strip off extra audio tracks).
You can download and use fully functional FREE trial version of Machete for up to 14 days.
For more information, visit Machete Home Page
You can also check out our free Machete Video Editor Lite - it offers Machete functionality for a smaller number of video formats.