Both the Zoom H4 and H2 from Samsung are high-end digital audio recorders. I have (with the help of others) recorded instructions and recommendations for how to record interviews and transfer the digital audio files to a computer:

For the H2 (*)

For the H4 (recording)

For the H4 (downloading)

(*) Note that the H2 supposedly does not mount in Leopard, but that there is also a firmware update that is reported to help.