Midi patchlists for CoreMIDI in OSX must be edited by "XML Editors". You can often find shareware XML editors online (try cnet.com or apple.com).

MOTU suggests checking out this website: www.savagetranscendental.com "cherrypicker" is a freeware application that is said to make patchlist editing easier in OSX.


* PROCEED WITH CAUTION! If you're not careful, you could lose or mess up your patchlists. Get familiar with XML editing before you permanently change a patchlist. Make a backup copy of the original patchlist, so in case you do mess something up, you can always restore the old one.