I am trying to find out how to connect an Roland XP-10 Multitimbral synth to record into logic studio(logic Pro 9) . i have installed a midi interface driver and have a new i Mac 27 inch. i have seen this work on other iMacs. Logic Studio is working and the input from the keyboard is working but not from the synth. If anyone could help that would be great. Does it need a plug-in? Am i missing a settings preference?