The Audacity 1.2.6 Release Notes (http://audacity.sourceforge.net/download/release-notes) mention this problem in this sentence: Linux: Recording in full duplex (playing existing tracks while recording) on some systems causes mono recordings to sound distorted or low-pitched. To work around this problem, set Audacity to record in stereo. This workaround works for me.
-- Audacity 1.2.4: recording from line in is distorted https://launchpad.net/bugs/72946 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
