This is probably going to be a really noobish question, but I'm desperate and I need some help. I have tried three different Midi to USB adapters for my Yamaha Clavinova CLP-920 and cannot for the life of me get it to work with either Sibelius or Logic Express 8. Can anybody tell me how to set up my keyboard with OS X so that LE and Sibelius can recognise it and use it. The current adapter I am using is the LogiLink Adapter. It's plugged in now, and currently has the USB light on, but not the Midi or the middle green one. I'm basically being stupid about this and need pointing in the right direction. Anything to help would be greatly appreciated. Cheers.