Reproducing a potential bug in faiface/beep

go.mod

module github.com/stjohnjohnson/reproduce-bug

go 1.13

require github.com/faiface/beep v1.0.2

main.go

package main

import (
	"log"
	"os"
	"time"

	"github.com/faiface/beep"
	"github.com/faiface/beep/mp3"
	"github.com/faiface/beep/speaker"
)

func main() {
	f, err := os.Open("../Lame_Drivers_-_01_-_Frozen_Egg.mp3")
	if err != nil {
		log.Fatal(err)
	}

	streamer, format, err := mp3.Decode(f)
	if err != nil {
		log.Fatal(err)
	}
	defer streamer.Close()

	speaker.Init(format.SampleRate, format.SampleRate.N(time.Second/10))

	done := make(chan bool)
	speaker.Play(beep.Seq(streamer, beep.Callback(func() {
		done <- true
	})))

	<-done
}

Makefile

default:
	-@make local
	-@make docker

local:
	@echo Running locally
	GOOS=linux GOARCH=amd64 go build

docker:
	@echo Running in Docker
	docker run --rm -v`pwd`:/src -w /src -e CGO_ENABLED=0 golang:1.13 go build