If I have a private track's url like:

https://soundcloud.com/xx/yy/s-tn8o48CxMd0?si=d02497b1821146c5acc313b19f90n4df

How can I use the javascript library to load it?

soundcloud_player.load(url, {
  auto_play: false,
  single_active: false,
  show_artwork: true
})

I'm assuming "s-tn8o48CxMd0" is the secret token. And don't know what "si=" is.

How can I load the track, preferably without needing a client_id since Soundcloud app registrations seem to be locked:

Due to the high amount of requests recently received, we will no longer be processing API application requests at this time. We are working to re-evaluate our process to make it more efficient.