As I understand to this code, I can say that if Bacon_Space writes !song on a channel, then the script will read a random line from the file CurrentSong.txt and give this message on that channel.

Pay attention that this script will work if Bacon_Space will write !song and if another writes, then will not work. If CurrentSong.txt has only one line of text in it, so this line will be sent to channel, otherwise will read a random line from it.

The Script will not work if Bacon_Space will add something to !song, i.e. !song cmd or !song play. In this case, you have to change the code to the following (of course if !song is the first word separated by space):

on *:TEXT:*:#: {
  if ($nick == Bacon_Space) && ($1 == !song) {
    msg $chan $Read(‪C:\Users\Bacon_Space\AppData\Roaming\AnkhHeart\AnkhBotR2\Twitch\Files\CurrentSong.txt)
  }
}