I have a Numark M6USB Mixer, which has a single USB connection for both input and output. I can set my system to use the M6 as an audio source, and system audio flows to it. Or, I can send the M6 master audio as an input source INTO my computer. This has worked on every program I've tried it with, except FMLE. The M6 shows up as "USB AUDIO CODEC" in both the input and output sections of Audio MIDI Setup, the Sound section of System Preferences, and even the device manager when holding option and clicking the volume icon. Yet, it is not listed as an audio source in FMLE. Why is this?