var song codec.Song

songs, _, err := codec.ByExtension(p, fileReader(p))

if err != nil {

return err

}

for _, song = range songs {

// Get first song

break

}

sampleRate, channels, err := song.Init()

if err != nil {

return err

}

defer song.Close()

seekRate := int(sampleRate / 10.0) // fps

vis.SetFreq(float64(seekRate))

out, err := output.Get(sampleRate, channels)

if err != nil {

return err

}

out.Start()

for {

samples, err := song.Play(seekRate)

if err != nil {

return err

}

out.Push(samples)

vis.Push(samples)

if len(samples) < seekRate {

// Done

break

}

}

return nil

return func() (io.ReadCloser, int64, error) {

f, err := os.Open(path)

if err != nil {

return nil, 0, err

}

fi, err := f.Stat()

if err != nil {

f.Close()

return nil, 0, err

}

return f, fi.Size(), nil

}