Philip

Hi, This may or may not help, but as a user of Audacity on a Mac (OS X 10.4) one problem I have come across, been frustrated by, and finally solved (sort of) is that when you alter the mono/stereo setting in Audacity it seems to reset the Mac's own sound I/O settings. The particular problem this seems to cause is that when it is reset to 'mono' input, it also changes the input to 8-bit recording - and the resulting recording is poor and crackly. I suggest trying the following: 1. Go to the 'Utilities' folder in 'Applications' and open the Audio Midi Setup utility. Under the Audio devices tab, see what the Audio Input setting is (2 channel is always 16 bit, but 1 channel can be 16 or 8 bit). Set it to 2-ch 16 bit. 2. Open up Audacity and go to the 'Preferences' (under the Audacity menu) - in the Audio I/O section, try resetting the input from stereo to mono, and watch what happens to the setting in the Audio Midi Setup utility. If your system behaves like mine, changing the Audacity preference to mono changes the Audio Midi Setup to 1 channel 8-bit recording. If this is happening then you can try resetting this to 1 channel 16-bit, after you have changed the Audacity preference to mono, and then try recording. It should be better (if this is the problem). To avoid having to keep fiddling around with this, I generally just record in stereo (which is always 16-bit). This may or may not be the problem for you - it was for me. I should mention that I am using a Griffin i-mic for audio input, though I don't think this is the issue. I hope that helps. If not, apologies for the long read! Philip