[linux-audio-user] scriptable audio editor to (parallel) combine streams

Hi there ... When watching a DVD one can sometimes select which language to listen to. I'm looking for a solution where I can playback a movie with two different languages at the *same* time: Most of my friends understand english quite well so we want to see a movie in its original tongue. Just one friend often needs translation so I would like to be able to listen to german translation with a headset. As I do not know of a player that can manage two different languages at the same time I thought of recording the DVD to harddisk, also record english and german audio and then mix both audio channels together. This could either be mixing each language to mono and combine them to a pseudo stereo containing a different language on the left or right channel. Or mixing two stereo channels to a pseudo surround sound, one language at the front the other at the rear. As written above I do not need to edit (cut or somehow modify) the streams. All I need is to remix them. Could you please give me a hint, which tool I can use for that? TIA Thomas -- keep mailinglists in english, feel free to send PM in german