Thought I'd bump this thread to indicate that I too would be happy to see a crack of this, having discovered and bagged this GTA Classics collection quite recently after having been unaware of its existence.
It astounds me that after releasing two of the games in the pack for free download, Rockstar feel that it makes sense afterwards to infect the physical media re-releases with SecuROM. As has been explained, these recompiled versions install literally everything to the hard-disk, music and all. I'm not too sure as to why Rockstar have chosen to not also release GTA London 1969 for free from their website however.
Personally it'd probs be best if all three titles in the pack were cracked anyway, mainly to catch up with the list of odd budget re-releases that apply newer protection (I know Sold Out's Theme Hospital has protection on it that wasn't in the original for example, though I can't recall what it uses exactly..... anyway, that's for another thread!
). But if GTA London at least got "liberated" I'd be content with that!