import java.io.File;
import java.net.URL;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
AudioSystem stream = AudioSystem.getAudioInputStream(new URL(
"http://hostname/audiofile"));
AudioFormat format = stream.getFormat();
if (format.getEncoding() == AudioFormat.Encoding.ULAW) {
} else if (format.getEncoding() == AudioFormat.Encoding.ULAW) {
}
}
}