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.