Hi, in order to use the DSL synth you have to install SimpleSynth software:

http://pete.yandell.com/software/simplesynth/Read%20Me.html

then, from the /Applications/Utilities/Audio MIDI Setup Application, choose MIDI Devices tab, and make sure that the IAC Driver is online.

Start SimpleSynth and choose as MIDI Source "IAC Driver Bus 1"; start Pd and go to the Preferences->MIDI Settings menu. Here choose as output device IAC Driver: Bus 1, press Apply and OK.

Now you should be able to play the Mac internal synth from Pd.

Hope this helps,

Libero

Date: Fri, 04 Jan 2008 11:26:21 -0800 From: Dudley Brooks dbrooks@runforyourlife.org Subject: [PD] Mac OSX internal MIDI? To: pd-list@iem.at Message-ID: 477E885D.4060801@runforyourlife.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Mac (and PD) newbie question:

I have PD on a Macbook Pro with MacOSX 10.4. I have no external MIDI equipment and no software synth (not yet, anyway). Another application, Sibelius, shows a playback device called DLS Music Device with the General MIDI sound set. I was informed by the Sibelius list that DLS is an internal Mac playback device (possibly the Quicktime synth, or is that yet another playback device?), but that it is only appears in other applications if they have explicitly built in support for it.

Can I get PD to recognize it? If so, how? If not, what are my other options? Thanks.