I used to be very good with Logic and music production and stuff. But I haven't done it for two years and maybe I've lost the touch and maybe lost all the memory... I can't seem to get the audio signal routing right. Please help me out. My workflow is to record MIDI tracks from MIDI keyboard (M-Audio Axiom 61) and then play the MIDI tracks onto tone generators and record them onto audio tracks. My old tone generators and audio and MIDI interfaces weren't with me at the time so I bought a Roland Sonic Cell cheap on eBay. It's sort of all-in-one solution because you can plug the USB cable in the computer and it will transfer both MIDI and audio signals. So I thought it was all good. But no matter how hard I tried, the audio signals input to Logic were so weak you almost can't see any movement on the meter on Logic's mixer! No matter, I could use "Normalise" in the Audio menu and that's what I did. But needless to say, audio amplified by something like ten- to twenty-fold isn't of very good quality. I thought maybe I didn't know how to use the Sonic Cell, so I had my old equipment shipped to me so that I could use what I'm most familiar with. Problem is I had to change my old FireWire interface to a USB one because I now have a MacBook Air with USB ports only. My old interface was MOTU Traveler Mk3, and I replaced it with a MOTU Ultralite Mk3 with USB and FW connectivity. I reckon the drivers and CueMix programs used to drive the interfaces are the same, I should have no problems working with the Ultralite. And indeed, setup was very straight forward, as there wasn't much setting up to be done. But that weak audio problem is there again! I can get audio from the tone generators to Logic. But the audio tracks are so weak, something like -50dB or -60dB weak even when the master volume of the tone generators are turned to maximum (as you would do to record from tone generators). Since the exact same problem happen with both the Sonic Cell's audio interface and now the MOTU Ultralite, I reckon it's not the way I set up the audio interface that's wrong, it's Logic itself. But I can't work out if it's a compatibility issue, or some hidden setting in Logic that I forgot to do. I'm running OS 10.8 with Logic Pro 9. Furthermore, there's no sound coming out of the audio interface when I play Software Instruments or MP3 files on Logic's audio tracks. It seems like there's something wrong with the connection between the audio interface and Logic. But I don't know what settings I've done wrong. Does anyone here have any idea as to what I might have done wrong? Thanks!