So far I've only played with Jamin by feeding it with Alsaplayer. Today I tried for the first time to use it on real work. I have 3 songs I've exported from ardour (0.99) in float 44.1kHz wav files. These files seem to be OK - I can load them into Audacity, play them with sox, etc. But my first thought - re-import the mixes into a new Ardour session, put them in sequence, and hook it up to Jack - failed with the problem I describe here: http://ardour.org/mantis/view.php?id=1167