Today, Peter Bauer from SilverPlay sent me a new patch for Louisiana Adventure. Although an older patch worked for some, if the game was purchased through Zodiac, the patch never worked. If anyone here is playing and the game freezes, especially at the end with the piano puzzle, please contact me and I can send you the latest patch. I just installed the patch and it worked perfectly on the piano puzzle, so no more hitting the Esc key.
Good luck all you wonderful gamers.