hi this is my first post in the list, I'm tring to play 2ch videos to 6ch.. i.e movies detected like this : Opening audio decoder: [mp3lib] MPEG layer-2, layer-3 MP3lib: init layer2&3 finished, tables done AUDIO: 48000 Hz, 2 ch, 16 bit (0x10), ratio: 16000->192000 (128,0 kbit) Selected audio codec: [mp3] afm:mp3lib (mp3lib MPEG layer-2, layer-3) what I came up is : mplayer -af sub -channels 6 movie.avi which plays 4+1, on the center i dont get any sound. I also tied using pan= w/o success. example : mplayer -channels 6 pan=6:1:0:0:0:0:0:0:1:0:0:0:0:0:0:1:0:0:0:0:0:0:1:0:0:0.5:0.5:0:1:0 which didnt work, but changing 0.5 to 1, showed some sound on the center.. mplayer -channels 6 pan=6:1:0:0:0:0:0:0:1:0:0:0:0:0:0:1:0:0:0:0:0:0:1:0:0:1:1:0:1:0 but then when using -af sub, didnt worked...i.e. it become 4+1 minus subwoofer(LFE) Is there a way to make this work.. I use alsa 1.0.0_rc2.(realtek ALC655 sound card) One other thing I want to build an index of my sound+movies...so I want to process them one by one and extract the info that mplayer shows when plays.. Can I run mplayer in a way that it only shows this info w/o really playing anything.. And more importantly from the example above which is the the true info about the format. is it this on the "Selected audio codec"-line i.e. "(mp3lib MPEG layer-2, layer-3)" i should see the all possible values from the DOCS isn't it, i mean their names so that I can show some short desc like : mp3, ac3, !!! The same questions apply for VIDEO ? How I can distinguish between the stereo (2ch) movies that contain Surround encoded into the tracks and thouse that are pure 2ch (i.e. no surround).. tia