After testing the game, i can say that there is no more freezes when the map is loading - i can see the loading screen, but it is the same for every map. Also i get no sound bug at 64-version. It should be fixed in the next patch.
Can i have the link for downloading 64-bit Renegade X binaries? In files section there's only 32-bit version. Got the same problem, no map loading previews, but on 32-bit version of the game.