I reckon this uses the mic in and outputs to both speakers, so that is why the jack has to be partially pluged (so that the mic in of N900 touches both audio outs of the stereo cable) Is there a way to make the N900 have stereo in? (switch the audio out contacts to audio in ones - can be done on some laptops) apart from the nokia n-gage I still can't find a device that can record in stereo.