You'll need a different event for that:

On *:text:.*:#:{
  • if ($1- == .ncn) { splay ncn.wav }
    if ($1- == .great) { splay great.wav }
    if ($1- == .nice) { splay nice.wav }
    if ($1- == .nice1) { splay nice1.wav }
    if ($1- == .nice2) { splay nice2.wav }
}