but because RMXP is rather old, a lot of the sites containing scripts have vanished over time
and because RMXP was the first version of RPG-Makers that allowed scripting, the script structure was more difficult to handle than later RMs.
you'll have to test your luck either in searching or in requesting a script - and because of its age, most scripters have long moved on to more modern makers.
Currently working on a playlist of songs that have inspired my work on revamping Battle Castle, and making sure they flow decently from one to the next. I will be posting it whenever I upload my next demo.
This is the first song in the playlist.