Carotinho <carotinobg at yahoo.it> writes:
> How do you do this with Audacity? That is, subtracting a channel
> from another?
Split the stereo track into two mono channels ("Split Stereo Track" on
the track's menu), pan them both to the centre, and invert one
("Effect > Invert").
--
Adam Sampson <ats at offog.org> <http://offog.org/>