Metro 6.0.4 is officially released and is accessible to registered users at:
http://www.sagantech.biz/downloads/downloads.shtml
This version fixes numerous problems some of which were first mentioned here. The important ones are:
The .ins file import slowness is gone.
Synthesiser plug-ins such as VSTi's or AudioUnit Music Devices work much better with subsections and also stay on more consistently.
Synthesiser plug-ins note off times were not being calculated precisely.
Subsections can now be colorized.
Mix Audio Tracks now has a packet size field.
Multiple-audio outputs are now named properly for core-audio devices.
Previously they were named device1 and device2 for the first 2 stereo outputs. Now they are named device 1+2 and device 3+4. This corresponds much better to the input device naming and shows that they are indeed stereo.
Other bugs were also fixed.
Metro SE users, please login and download.