It's also very specific to the operating system that you are using. On FreeBSD I'd probably try to do it like this:  create a virtual cuse4bsd HID device, make sure the emu uses this device as main controller, change the controller state via simple shell commands (like usbhidctl I think) directly from Pd, with the [shell] object. Untested

You could also use xdotool to send keypresses to the emulator, and configure the emulator to use the keyboard as the controller.  This should also work on Linux.  I don't know what the latency would be like.

So from what I remember in doing this, you'll want to use fiddle~ for pitch detection and there was a similar external for amplitude detection, though this should be easy to roll your own by feeding it into a table and reading from that.

The other one is probably the percussion follower object [bonk~].

It's also very specific to the operating system that you are using. On FreeBSD I'd probably try to do it like this:  create a virtual cuse4bsd HID device, make sure the emu uses this device as main controller, change the controller state via simple shell commands (like usbhidctl I think) directly from Pd, with the [shell] object. Untested

Next to the Hurleur forum, the Pd list is also a good place to ask http://lists.puredata.info/listinfo/pd-list.

I thought it would work quite well as a visualiser for live streaming audio and/or live shows.

I'm really struggling to get started with this and I'm not sure where to look for help, so any assistance/pointers/patches would be greatly appreciated!

J3wel