Assuming you have a PC with a CD/DVD burner there are options.
1)Run analogue out of the D16 to the input jack of the PC. Not the best solution because the PC might not like a line level signal.
2)Buy a cheap 16 bit interface such as the Behringer UCA202. Much better than most PC soundcards and can handle up to a volt rms.
3)If the PC does not have a burner, do as above and save the tracks as 16 bit 44.1kHz .wav. Buy an external USB burner (N.B. get a USB "Y" cables as well because one USB 2.0 port often cannot supply enough current. USB 3.0 should be fine.
But the best transfer quality will come from the S/PDIF connection, look around for old, S/H interfaces. The M-Audio Fast track pro, Tascam US122/144. These were PROPER interfaces with S/PDIF and MIDI!!Another option if you have a PC with a PCI slot is a souncard such as the M-A 2496 but there were some $25 cards that were quite good. Trust Optical Expert was one, co ax and optical digital iirc.
Dave.