Ahh what a glorious sight! I got Ardour and Hydrogen to sync using Jack transport. Here's the setup I used: jack-audio-connection-kit 0.92.0-0.cvs.1.rh90.ccrma ardour 0.9beta9-1.rh90.ccrma hydrogen 0.8.1 (just updated at Planet CCRMA by Fernando today) In Hydrogen preferences Audio driver was set to Jack and Jack Transport Slave was checked on. In Ardour sync source was set to Jack. Jack time master and Jack transport master were both checked. When I press play in Ardour: Jack + Ardour + Hydrogen all move and both Hydrogen and Ardour sound. When I press play in Jack all move, Hydrogen sounds, but Ardour doesn't make a peep. Hydrogen works in both song mode and pattern mode. But note that when Hydrogen is in pattern mode it always starts the pattern from the beginning no matter what position in a measure Ardour is at. Moving the Ardour transport (i.e. rewind or fast forward) moves the position in Hydrogen (in song mode) and Jack as well - so if you use Hydrogen in pattern mode you get a clean sync between the two! Well, just thought I'd pass on the news. :-) Thomas Hemba
