> The idea is to translate MIDI clock to jack transport timing events. I don't
> know how this is coming along, but it's higher on the midish list, than
> MIDI-syncing is on ecasound's.

this cant work. jack-transport is running at the same speed as the
soundcard audio clock. All you can do, is stop it, and restart, at a new
position. But starting takes an undefined time in the presence of
slow-sync clients.

An app that generates midiclock from jack-transport should be quite
trivial though.

If your midi hardware generates MMC messages, especially the "locate" mesage, then jackctlmmc will reposition JACK transport to keep your stuff in sync. Note that this isn't exactly the same thing as MTC, although they are very closely related. You might want to try running jackctlmmc with the "-v" option (verbose) on so that you can see if your device is generating recognized MMC commands. Jackctlmmc is still young yet, but it's current console-only incarnation seems perfect for your needs.

-- Alex