1) I read Arda Eden uses Hexter DSSI synth, and sound well, but I don't have a
midi controller, and have not experience with Rosegarden (I only use Ardour,
no midi at all). Is there a simple host to DSSI hexter plugin which can be
played/programed with mouse?
one way to do this would be to use ghostess as a simple DSSI-host for
Hexter and to enter the notes by mouse in seq24. Seq24 can be synced
with Ardour via jack-transport.
There are several other sequencers that would do the task.
This setup just works for me and I guess it is simple.
Dave Phillips wrote a nice introduction to seq24:
http://www.linuxjournal.com/article/8304