I would like to add a DSSI synth.
I can add it by right clicking on the track panel + clicking on "Add Synth->DSSI->...".
If I try to add it via the "Edit" menu from the menu bar, there is no "DSSI->..." menu after "Edit->Add Track->Add Synth".
Have you compiled MusE on your own, or used a precompiled package?
You have to compile in DSSI support, if you haven't, you obviously can't see DSSI synthes.
I compiled muse trunk myself.
I can't see any entry in the menu from the menu bar, but I CAN see some dssi synth when I do the right click in the track panel.
This was fixed in SVN trunk a few weeks ago
as per your report in the forums, I think.
Thanks for the report! It was my mistake.