Soundflower, Logic Pro X and Ustream

I broadcast a show on Ustream in which I play the saxophone against trax that I have

loaded into iTunes. I play the sax into an apogee USB mic. I also use that same mic

to talk to the audience while trax are playing, at which time I need to adjust the level of the track

and the mic. I’m working on a Mac Pro with Logic Pro X.

Up until now, here’s what I’ve been doing.

In Mac Audio Midi Setup:

I set the output device in Audio Midi Setup to Soundflower (2ch).

I set the input device in Audio Midi Setup to Mic.

In Logic Pro X:

In preferences I set the input device to Mic, and the output to

to Soundflower (2ch)

In Ustream:

I set the input to Soundflower (2ch)

For monitoring:

I set the Soundflowerbed desktop app to route from Soundflower to Built-in Output which I then

listen to on my headphones as I do the show.

This works, in a fashion, but is extremely awkward, in that the only way to lower the music track levels when I want to speak on the mic is by lowering the slider on iTunes.

Here’s what I want to do, but can’t yet figure out, despite many attempts:

I want to route both the iTunes and the mic into Logic Pro X.

I want to be able to mix both the mic and the trax in Logic Pro X and then

output it into Ustream for broadcast.

I also want to be able to monitor the mix though my headphones.

I’ve tried creating aggregate devices and multi-output devices but can’t seem to get what i want.

The permutations I’ve tried and the problems are too numerous and varied to list here.

But I’d appreciate any ideas on how to accomplish running a system + mic input into logic,

mixing in there, and then piping the combined trax out through Ustream.

Thanks.

david