I've been using some multi-trackers such as Ardour and Rosegarden. In any of them I couldn't find a function or plugin to automate dynamic panning (I mean, to be able to play, within an audio file, with its left and right channels moving from one to the other in a non-destructive way). Does anyone know if there is a plugin for any of the applications previously mentioned or an application which contains this function? Thank you very much for your help.