Mixer interface added, with support for track inserts and sends coming, but already supports stereo and surround assignments for tracks. Screenshot coming soon. Numerous bug fixes. Many code cleanups, all over the place. 64 bus architecture sort of in place, though currently its not usable via the GUI in any way.
Export can be to mono or stereo soundfiles in any format supported by libsndfile.
This is still not really correct, in that it covers a wider horizontal area than the waveview windows, and its resolution is wrong. But its a start. Full dynamically-learned MIDI control of all plugin control ports. 2000 Ardour now has support for audio interfaces with different numbers of playback and capture channels, such as the Midiman Delta series, and any others built around the ice1712 chipset. A prototype exploration of the idea, but it works.