Happy to report Tascam US-2400 works great with Ardour 2.0.x. I've gotten, faders, buttons and knobs to work. As an added bonus, even the transport buttons work (they did not work in 0.99.3). Its a shame Tascam pulled this unit off the market, there is nothing else in its class/price point. http://www.tascam.com/Products/US-2400.html -dan