Is it possible to generate two independent audio tracks (for example english/spanish)?

I'm trying to generate a video with two independent audio tracks (let's say, english and spanish). I can export adding the option "two audio channels" but it looks that channels and tracks have nothing to do. When I play it, the player just see a single audio track with a mix of english and spanish?

Thanks in advance for any help/hint/link, Regards!

Enrique

(For now I just solved my problem using ffmpeg to add a second audio track to the generated openshot avi file like explained at: http://blog.noizeramp.com/2011/04/21/adding-audio-track-to-video-with-ffmpeg/)