to play directly to the person and not to the channel change the $chan to $nick
Code:
On *:Text:!target:#: {
  play $nick [color:red]file.txt[/color] $calc($lines([color:red]file.txt[/color]) * 80  )
}

adjust the "80" to speed up or slow down the play so you dont flood and dont bore the reader
the file.txt should be changed to your actual file name