MusicPlayer.cs

using Microsoft.Xna.Framework.Media;
using System;

namespace AudioResumeTest
{
    public interface IMusicPlayer
    {
        bool IsMuted { get; set; }
        bool IsRepeating { get; set; }
        float Volume { get; set; }
        TimeSpan PlayPosition { get; set; }

        void Play(Song s);
        void Play(Song s, TimeSpan startPosition);
        void Stop();
    }

    public class MonoGameMusicPlayer : IMusicPlayer
    {
        public bool IsMuted { get => MediaPlayer.IsMuted; set => MediaPlayer.IsMuted = value; }
        public bool IsRepeating { get => MediaPlayer.IsRepeating; set => MediaPlayer.IsRepeating = value; }
        public float Volume { get => MediaPlayer.Volume; set => MediaPlayer.Volume = value; }
        public TimeSpan PlayPosition { get => MediaPlayer.PlayPosition; set => MediaPlayer.PlayPosition = value; }

        public void Play(Song s)
        {
            MediaPlayer.Play(s);
        }

        public void Play(Song s, TimeSpan startPosition)
        {
            MediaPlayer.Play(s, startPosition);
        }

        public void Stop()
        {
            MediaPlayer.Stop();
        }
    }
}