Hi again ... > You might have a look at sox (which also comes with soxmix) - I'm not sure > if it is actually able to mix two sources to different channels, but since > you asked for a scriptable audio editor, sox has been the first thing that > came in my mind, as it is scriptable as in shell script. I've read the manpage two times now. soxmix is able to mix two different audio files into one but all I got until now is both languages totally mixed up in a stereo file. Maybe sox is unable to seperate them, maybe my english is just not good enough to understand the manpage. Cheers Thomas -- keep mailinglists in english, feel free to send PM in german