[LAU] linuxsampler plugin ?

Greetings, I'm testing the Linuxsampler plugin with Ardour3 SVN. The plugin loads correctly, and when I launch the Fantasia GUI it identifies itself correctly in the interface. I can load a MIDI file in A3 and watch it play the keyboard on the LS plugin. Everything looks good, but there's no sound. There's also no instance of Linuxsampler in QJackCtl. When I run LS + Fantasia standalone I noticed that it doesn't autoconnect to JACK. Perhaps this is the problem, but I can't find where to configure LS to autoconnect. Any suggestions ? This is a low-priority issue for me, but it'd be nice to figure out what's happening. Best, dp