Great! Thanks! There's one problem still I cannot pipe to sox form mixing the results I tried many option Making this code more simple but with the 2 channels: /but this way i cannot change the speed but on the example can be changed/ Here you are the codes should be mixed with sox: mplayer -slave -input file=fifo1 foo1.mp3 -ao pcm:nowaveheader:file=pcmpipe11 mplayer -slave -input file=fifo2 foo2.mp3 -ao pcm:nowaveheader:file=pcmpipe21 pv pcmpipe11 -L 16400 > pcmpipe12 pv pcmpipe21 -L 16400 > pcmpipe22 sox -t raw pcmpipe12 -t raw pcmpipe22 - | lame - streeeam.mp3 Thanks, Regards, Zol > _______________________________________________ > MPlayer-users mailing list > MPlayer-users at mplayerhq.hu > https://lists.mplayerhq.hu/mailman/listinfo/mplayer-users >