Like Kevin, I wanted a DVD set of this series a few years ago. It was already long out of print in the UK, but I found a used set of the complete series on DVD, actually traveling across London to the shop that had it. Unlike Kevin I have yet to rip my DVDs for Plex/VLC purposes - but that is on my to-do list.
I can't 100% attest to what music may or may not have been replaced on these discs. I think there must have been some. That said, I know that Miami Vice, also referenced in the piece, *did* eventually get released with all its music intact (and that reminds me that I need to pick up Blu Rays of that series before they go out of print).
Adam