The most reliable way I've found is to go from your DAT to a Hosa ODL-276 via S/PDIF coaxial cable with RCA ends, optical out of the ODL-276 and into a Creative Labs Nomad Jukebox 3 (NJB3 in ts.com-speak) to record an identical copy onto the NJB3. Then, after the recorded copy has been made, go firewire or USB out of the NJB3 into your laptop.