The tracks are automatically mixed down during export, no difference (except for multi channel files). Ctrl-Shift m leaves all tracks intact and creates an additional track that is equal to the mixed-down version. This is useful for determining the overall amplitude and if the gain of the several tracks have to be lowered. You still have to align your tracks as it was previously explained in the Time-Shift topic. By the way, I've written a plug-in that alignes the tracks end-to-end but with much more options than the command under tracks. For instance: - you can choose the gap or overlap time. - Several crossfade variants - Triming of silence at the start or end of the track. The link is: http://forum.audacityteam.org/viewtopic.php?f=42&t=67839&sid=1859c42b8441212aca110a8bd551f29e#p190928 The tracks will still be listed separately, but you can mix and render them down, as you've already discovered. Regards Robert The audacity4blind web site is at //www.freelists.org/webpage/audacity4blind Subscribe and unsubscribe information, message archives, Audacity keyboard commands, and more... To unsubscribe from audacity4blind, send an email to audacity4blind-request@xxxxxxxxxxxxx with subject line unsubscribe