I'm feeding an external mic (Seide PC-ME) through an audio interface (Yamaha GO46) to my MacBook (OS 10.5.8). I've used it many times, but I simply get can't it to work, now. System Prefs.> Sound Input is set to Firewire GO46 (Pardon me if some terms are a little off, but I'm translating from my Japanese OS. I hope they're understandable.) Audio MIDI Settings are all set to GO46, volume is all the way up and "mute" is off. Headphones connected to the same audio interface work fine. I've restarted and reconnected everything, countless times. One suspicious thing/hint: Whenever I used to connect the Firewire cable for the audio interface to my Mac (while Garageband is open), two notices used to appear -- one notifying me of the new device and the other notifying me, if I recall correctly, of the mic itself -- whereas now, I only get the first notice and no second notice. Seems the mic isn't being recognized at all. Thank you for any suggestions!