This was the answer to my problem: #!/bin/bash sox $1 -r 44100 -c 2 -s -w /tmp/$$-1.raw sox $2 -r 44100 -c 2 -s -w /tmp/$$-2.raw cat /tmp/$$-1.raw /tmp/$$-2.raw > /tmp/$$.raw sox -r 44100 -c 2 -s -w /tmp/$$.raw $3 rm /tmp/$$*.raw exit And it works nicely! _______________________________________________ Blinux-list mailing list Blinux-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/blinux-list