Ok, firstly, Alesis customer service is NON EXISTENT, I sent them an email 4 months ago about an issue I had and I still have had no reply. Secondly....HELP! I have a nice Mac, (Is there any other kind) It's fast, has loads of ram and untill I installed Leopard worked seamlessly with OS X. Now I have installed Leopard, My Mac sees it and records from it no problems. It won't however playback through it, no matter what I try. I've spoken to Apple who were very helpful. They have got me to rollback the FireWire driver to SDK23. Unfortunately this didn't work. My Mackie Onyx works fine, but it's only a satellite and only has 2 inputs. I need 12 for the studio. I'm of the oppinion that Alesis need to Write a new driver for it but I don't think thats going to happen for a good long while yet and I'm recording on the 5th Nov. Can anyone please help with any advice I may find useful. I don't know how I can help back, but if it's in my power, I will. Thankx.