Need some help. I use a presonus firestudio project when recording multi tracks. No problem with a new project, but when returning to a project I find that I'm unable to change the input source from one channel to another when the interface is again attached. This may come from opening the project for editing with no interface attached and Logic 9.1.8 reverting to a default input. So, I'm having a problem overcoming the default input. I have found that if I open a new track I have the option of selecting any input from the interface. What seems to be my problem and what should I do to get free selection of input sources on pre-recorded tracks? Thanks in advance for advice.