64bit timeline

Although Ardour has been 64-bit compatible since it was first written, it has had a limitation in that the maximum position on its timeline was limited by using a 32bit value for this purpose. At 48kHz, this limited the timeline to about 12hrs. In Ardour 3.0, all positions are stored in 64 bit values, meaning that there is essentially no meaningful limit to the length of the timeline. If you want to record a multi-day festival and put it all in one session, Ardour 3.0 will go there with you.