I've been slow coming to the age of digital recording, so please assume minimum knowledge on my part, despite that I've copiously read all my manuals and watched YouTube videos 'til my brain is mush. I've been able to record tracks, but I cannot figure out how to get sound to my headphones, so that I can monitor previous tracks in silence while recording another. This is my base set-up (before outboard stuff): Cubase Le4 on a G4 Mac (Gigabit Ethernet Dual Core 500Mhz OSX 10.411); MOTU 2408 Mk II, with PCI-324 KRK V6 nearfields The MOTU outputs go to the KRKs. When I plug headphones into the headphone jack on the MOTU, I get nothing, even with the volume control on full. No problem getting sound through the KRKs, which is how I've been learning this (direct in recording), but I can't get anything to the phones no matter what output configurations I've tried. I know that the answer likely is an easy one, which makes this all the more frustrating. Thanks in advance to anyone who has any suggestions to offer.