So a while back - thanks to these forums - I was finally able to play MIDI compositions using my X5D as an external instrument, via a M-Audio MIDI connection to the iMac. However, while trying to set up to allow audio recording, via the Korg's sound outputs and an i-Mic, I tweaked the audio settings in Logic 8. Now, not only is there no audio input into Logic from the Korg, I can no longer hear the MIDI input being played through the Korg. Not quite sure what I've done. Any helpful pointers would be very much appreciated.