Installing is almost idiot proof

1. Unzip "movie.7z" with 7-zip

2. Go to your game's directory, open the data folder, and find movie.dat
(Chrono Cross - The Radical Dreamers Edition\data\movie.dat)

3. Rename your movie.dat to " movie.dat.backup "
(Now you have a backup of the original FMV's)

4. Take the movie.dat, that you just downloaded, and place it in your data folder.