playing mp3 with golang

mp3_player.go

package main

import (
	"fmt"
	"io"
	"log"
	"os"

	"github.com/hajimehoshi/oto"
	"github.com/tosone/minimp3"
)

func main() {
	// open file
	file, err := os.Open("example.mp3")
	if err != nil {
		log.Fatalln(err)
	}
	defer file.Close()

	// new a decoder
	dec, err := minimp3.NewDecoder(file)
	if err != nil {
		log.Fatalln(err)
	}
	defer dec.Close()
	<-dec.Started()

	// new a context and a player
	var context *oto.Context
	if context, err = oto.NewContext(dec.SampleRate, dec.Channels, 2, 1024); err != nil {
		log.Fatal(err)
	}
	var player = context.NewPlayer()
	defer player.Close()

	// start playing
	fmt.Println("Starting!")
	io.Copy(player, dec)
}