This is a maintainance release of JACK. Three important issues are
fixed:
   * the old ALSA PCM port names are available, so that applications
       that either hardcode or have existing patching information
       containing these names will function.
   * the use of popen(3) to invoke jackd to determine the server
       directory has been fixed so that it works on systems that
       have closed a security risk with popen(). This was preventing
       correct startup on OS X, in particular.
   * USX2Y driver updates to enable JACK MIDI devices to show up
        in raw-usb mode (previously, raw-usb mode didn't initialize
        or call MIDI drivers properly).
Download from either 
jackaudio.org or sourceforge:
http://jackaudio.org/downloads/jack-audio-connection-kit-0.109.2.tar.gz
http://prdownloads.sourceforge.net/jackit/jack-audio-connection-kit-0.109.2…