For anyone who is a Mac guru, here's a potential stumper for ya: I have a MBP w/ an Edirol FA-66 firewire audio interface. Studio monitors are connected to the interface outputs. I want to use the volume keys (or the Apple Remote) to control volume output through the FA66. All I can do now is use the volume knob on the interface. Is volume control through OSX even possible (when audio output is set to a firewire port)? Troubleshooting I've done/things I know: First of all, I have everything set up perfectly to allow for playback of any software (Itunes, QT, etc, plus all recording software/MIDI sftwr I have). Within Audio MIDI Setup Preferences, Default Output and System Output are set to the FA66. In Sound Preferences, the FA66 is selected for Output. Right beneath this portion of the screen under "Settings for the selected device:", it says, "The selected device has no output controls." (I'm thinking this may be an indication that what I'm wanting to do cannot be done. I called AppleCare, and they were little help. They said, "Contact Edirol; it should have something to do with drivers on their end." Contacted Edirol, and they didn't quite understand my question and gave me an answer about monitoring the input signal (c'mon! That wasn't my question!!). So I'm hoping someone on Macrumors has the knowledge to help here. And feel free to get as technical as you want; if I don't know what you're talking about, I'll learn. Thanks!