.go

package main

import (
	"os"
	"time"

	"github.com/faiface/beep"
	"github.com/faiface/beep/speaker"
	"github.com/faiface/beep/wav"
)

func main() {
	f, _ := os.Open("13 Face to Face.wav") // set to a real file name
	s, format, _ := wav.Decode(f)

	old := format.SampleRate
	new := beep.SampleRate(48000) // set to an arbitrary (sane) sample rate value

	speaker.Init(new, new.N(time.Second/30))

	done := make(chan struct{})
	speaker.Play(beep.Seq(
		beep.Resample(4, old, new, s), // try different quality values
		beep.Callback(func() { close(done) }),
	))

	<-done
}