2 Audio selections

I have a video that was made in the English language. But as I got it it has a 2nd audio track in Spanish, which plays by default in Mplayer. A document with this video suggested VLC player…indeed VLC has a audio selection showing 2 tracks [both stereo]…And selecting track 2…the video plays in its’ original English soundtrack fine! I would like to save/convert it to this original soundtrack…to burn it to DVD and watch it on my TV but can’t figure out how to. Surely must be possible,…would greatly appreciate any advise/help. John