Mulitsite with same theme. One site it works the other doesn't

I installed a multisite because I needed a development section and a songwriting section that were each stand alone sites. I installed x theme and put a song samples page on both multisites. I then created a successful player here: https://ptpmusic.com/development/song-player/ on the development site and copied and pasted the code on the songwriting site here: https://ptpmusic.com/songwriting/song-player/ but that one doesn’t work. They are both accessing the plugin in the same way. When I upload a new mp3 the player still doesn’t work on songwriting site. Please tell me what’s wrong with the songwriting page

https://www.ads-software.com/plugins/mp3-jplayer/