Ilyeneket írogat az alábbi parancsokra:
mplayer valami.mp3 -af channels=4:2:1:1:0:0 -channels 4
mplayer valami.mp3 -af channels=6:2:1:5:0:4 -channels 6
[channels] Invalid routing in pair nr. 0.
[libaf] Reinitialization did not work, audio filter 'channels' returned error code -2
Error at audio filter chain pre-init!