Audio Futures

PlayAudio.scala

import java.net.URL
import javax.sound.sampled.{AudioSystem, LineListener, LineEvent}
import scala.concurrent.{Promise, Future, Await}
import scala.concurrent.duration.Duration

object PlayAudio extends App {

  val f = playUrl(
    new URL("http://www.wavsource.com/snds_2014-05-05_4169601282614752/movies/airplane/wrong_week4.wav")
  )

  Await.result(f, Duration.Inf)

  def playUrl(url: URL) = {
    val p: Promise[Unit] = Promise()
    val clip = AudioSystem.getClip()
    clip.open(AudioSystem.getAudioInputStream(url))
    clip.addLineListener(new LineListener {
        def update(l: LineEvent) = {
          l.getType match {
            case LineEvent.Type.STOP =>
            clip.close
            p.success(())
          }
        }
      })
    clip.start
    p.future
  }
}