[LAU] surround sound with mplayer and windows media

Hello everyone! I have a file, which is supposedly surroundsound, at least the site says so and I have no reason to doubt them. But when I open it with mplayer, it tells me, that there are only 2 channels: AUDIO: 44100 Hz, 2 ch, s16le, 192.0 kbit/13.61% (ratio: 24000->176400) So how can I grab the different channels, to make a binaural version of it. I seem to remember that csound should be capable of that. But first of all I need all the different channels. At least I suppose so? If anyone wants to test a file, it's here: http://www.wdr.de/radio/hoerspiel-surround/lautsprechertest192_44_16_vbr.wma It's a small speaker test from their site. Can anyone help me? Kindest regards Julien -------- Music was my first love and it will be my last (John Miles) ======== FIND MY WEB-PROJECT AT: ======== http://ltsb.sourceforge.net the Linux TextBased Studio guide ======= AND MY PERSONAL PAGES AT: ======= http://www.juliencoder.de