Well, I've been hunting around on the web and have been searching for this question on the forum but haven't found what I was looking for.
First, the system: iMac, OS 10.5.8
Software: Audacity 1.2.6
Hardware: Alesis Multimix 8 USB 2.0 (I've also installed the 1.6.6 drivers from the Alesis site).
So, here's the problem: I can get GarageBand 8 to recognize the drivers, but I also wanted to try using Audacity. When I go to set the Audio I/O preferences, I've got no option for the Alesis. In fact, my only choices are:
Built-in Microphone
Built-in Input
TonePort UX1 (I've had that about a year)
Soundflower (2ch)
Soundflower (16ch) (have no idea what these are)
Is there something I'm missing here?
Oh, and yes, I've got the AudioMidi Utility and the Sound System Preferences set correctly (as I said earlier, it works fine in GarageBand).
Any help would be greatly appreciated.

Below is the link to the application and script as shown in the video. Click it and extract and just follow what I mention in the video and you should be goo.

Alesis Multimix 8 Usb Fx Driver Mac

Alesis Multimix 8 Usb Driver Download Mac

Just got a used Alesis Multimix 8 Firewire mixer to which I looked forward for quite a while now. Unfortunately my initial experience isn't all that great. I've connected the mixer to my Macbook Pro (4,1), yet the device could not be recognized. The latest Alesis drivers (3.5.6) are installed. The Mac runs Mac OS 10.7.2. Alesis Usb Driver free download - VIA USB 2.0 Host Controller Driver, Driver Easy, Driver Booster, and many more programs. The MultiMix 8 USB FX contains a complete USB recording interface. Musicians and engineers can plug the MultiMix 8 USB FX’s class-compliant USB connection into their Mac or PC without installing any software drivers and enjoy a digital-direct stereo connection with virtually any audio software application.

Alesis Multimix 8 Usb Drivers For Mac