I want to play a wave file from my CentOS 6.5 Vagrant box using aplay and of course I want to hear the sound.This is what I do:> aplay sine.wavPlaying WAVE 'sine.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, MonoIt seems aplay actually plays the file. But I don't hear the sine tone.The same happens using speaker-test. It seems to work but I don't hear anything.> speaker-testspeaker-test 1.0.23Playback device is defaultStream parameters are 48000Hz, S16_LE, 1 channelsUsing 16 octaves of pink noiseRate set to 48000Hz (requested 48000Hz)Buffer size range from 2048 to 16384Period size range from 1024 to 1024Using max buffer size 16384Periods = 4was set period_size = 1024was set buffer_size = 16384 0 - Front LeftTime per period = 2.618271 0 - Front LeftThis is my Vagrantfile:Vagrant.configure(2) do |config|  config.vm.box = centos-6.5  config.vm.provider virtualbox do |v|    v.memory = 2048    v.cpus = 2    v.customize [      modifyvm, :id,      --ioapic, on,      --audio, coreaudio,      --audiocontroller, ac97    ]  endendWhat is missing? What do I have to do to actually hear the audio output?
Why don't I hear audio playing from my CentOS 6.5 Vagrant box?
centos;audio;alsa;vagrant