Fix MediaPlayer.Play() return

Bindings.Tests/MediaPlayerTests.cs

 using System;
+using System.Diagnostics;
+using System.IO;
+using System.Linq;
+using System.Threading.Tasks;
 using NUnit.Framework;
+using VideoLAN.LibVLC;
 using VideoLAN.LibVLC.Manual;
 using MediaPlayer = VideoLAN.LibVLC.Manual.MediaPlayer;
 
@@ -17,11 +22,52 @@ namespace Bindings.Tests
         }
 
         [Test]
-        public void T()
+        public void OutputDeviceEnum()
         {
             var mp = new MediaPlayer(new Instance());
-            
+            var t = mp.OutputDeviceEnum;
+            Debug.WriteLine(t);
         }
 
+        string RealMediaPath
+        {
+            get
+            {
+                var dir = AppDomain.CurrentDomain.SetupInformation.ApplicationBase;
+           //     var binDir = Path.Combine(dir, "..\\..\\..\\");
+                var files = Directory.GetFiles(dir);
+                return files.First();
+            }
+        }
+
+        [Test]
+        public void TrackDescription()
+        {
+            //FIX ME
+            var instance = new Instance();
+            var mp = new MediaPlayer(instance);
+            var media = new Media(instance, RealMediaPath, Media.FromType.FromPath);            
+            mp.Media = media;
+            var track = mp.AudioTrack;
+            Assert.True(mp.SetAudioTrack(track));
+            Assert.IsNotEmpty(mp.AudioTrackDescription);
+        }
+
+        [Test]
+        public async Task Play()
+        {
+            var instance = new Instance();
+            var media = new Media(instance, "http://www.quirksmode.org/html5/videos/big_buck_bunny.mp4", Media.FromType.FromLocation);
+            var mp = new MediaPlayer(media);
+            var called = false;
+            mp.EventManager.Playing += (sender, args) =>
+            {
+                called = true;
+            };
+            mp.Play();
+            await Task.Delay(5000);
+            Assert.True(called);
+            Assert.True(mp.IsPlaying);
+        }
     }
 }

libvlcsharp/Manual/MediaPlayer.cs

@@ -641,20 +641,12 @@ namespace VideoLAN.LibVLC.Manual
             : base(() => Native.LibVLCMediaPlayerNewFromMedia(media.NativeReference), Native.LibVLCMediaPlayerRelease)
         {
         }
-
+        
         /// <summary>
+        /// Get the media used by the media_player.
         /// Set the media that will be used by the media_player. 
         /// If any, previous md will be released.
         /// </summary>
-        /// <param name="media">the Media. Afterwards the p_md can be safely destroyed</param>
-        public void SetMedia(Media media)
-        {
-            Native.LibVLCMediaPlayerSetMedia(NativeReference, media.NativeReference);
-        }
-
-        /// <summary>
-        /// Get the media used by the media_player.
-        /// </summary>
         public Media Media
         {
             get
@@ -662,6 +654,7 @@ namespace VideoLAN.LibVLC.Manual
                 var mediaPtr = Native.LibVLCMediaPlayerGetMedia(NativeReference);
                 return mediaPtr == IntPtr.Zero ? null : new Media(mediaPtr);
             }
+            set => Native.LibVLCMediaPlayerSetMedia(NativeReference, value.NativeReference);
         }
 
         /// <summary>
@@ -690,10 +683,7 @@ namespace VideoLAN.LibVLC.Manual
         /// If playback was already started, this method has no effect
         /// </summary>
         /// <returns></returns>
-        public bool Play()
-        {
-            return Native.LibVLCMediaPlayerPlay(NativeReference) != 0;
-        }
+        public bool Play() => Native.LibVLCMediaPlayerPlay(NativeReference) == 0;
 
         /// <summary>
         /// Pause or resume (no effect if there is no media).