Linux fixes:

-Copy PropertyChanged.Fody.dll to Tools/Fody in MediaBrowser.Model.csproj
-Check if root for WebSocketServer.FlashAccessPolicyEnabled (port < 1024)
-Check resolution value !=0 before SetResolution
-Catch _userManager.RefreshUsersMetadata exception when running MB3 for the first time
-Fix _appHost.Init() missing argument
-FFmpeg: set default and execute permission(766) to ffmpeg and ffprobe
-FFmpeg: Detect the OS type and download the correct version 
-Rename MediaBrowser.WebDashboard/dashboard-ui/scripts/Itemdetailpage.js to itemdetailpage.js

MediaBrowser.Server.Implementations/Drawing/ImageProcessor.cs

@@ -228,8 +228,17 @@ namespace MediaBrowser.Server.Implementations.Drawing
                             // Graphics.FromImage will throw an exception if the PixelFormat is Indexed, so we need to handle that here
                             using (var thumbnail = new Bitmap(newWidth, newHeight, PixelFormat.Format32bppPArgb))
                             {
+                                #if __MonoCS__
+                                // Mono throw an exeception if assign 0 to SetResolution
+                                if (originalImage.HorizontalResolution != 0 && originalImage.VerticalResolution != 0)
+                                {
+                                    // Preserve the original resolution
+                                    thumbnail.SetResolution(originalImage.HorizontalResolution, originalImage.VerticalResolution);
+                                }
+                                #else
                                 // Preserve the original resolution
                                 thumbnail.SetResolution(originalImage.HorizontalResolution, originalImage.VerticalResolution);
+                                #endif
 
                                 using (var thumbnailGraph = Graphics.FromImage(thumbnail))
                                 {

MediaBrowser.Server.Implementations/EntryPoints/RefreshUsersMetadata.cs

@@ -28,7 +28,18 @@ namespace MediaBrowser.Server.Implementations.EntryPoints
         /// </summary>
         public async void Run()
         {
+            #if __MonoCS__
+            try
+            {
+                await _userManager.RefreshUsersMetadata(CancellationToken.None).ConfigureAwait(false);
+            }
+            catch
+            {
+                System.Console.WriteLine("RefreshUsersMetadata task error: No users? First time running?");
+            }
+            #else
             await _userManager.RefreshUsersMetadata(CancellationToken.None).ConfigureAwait(false);
+            #endif
         }
 
         /// <summary>

MediaBrowser.Server.Implementations/MediaBrowser.Server.Implementations.csproj

@@ -85,6 +85,7 @@
     <Reference Include="ServiceStack.Text">
       <HintPath>..\ThirdParty\ServiceStack.Text\ServiceStack.Text.dll</HintPath>
     </Reference>
+    <Reference Include="Mono.Posix" Condition=" '$(ConfigurationName)' == 'Release Mono' " />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="..\SharedVersion.cs">

MediaBrowser.Server.Implementations/WebSocket/AlchemyServer.cs

@@ -4,6 +4,9 @@ using MediaBrowser.Common.Net;
 using MediaBrowser.Model.Logging;
 using System;
 using System.Net;
+#if __MonoCS__
+using Mono.Unix.Native;
+#endif
 
 namespace MediaBrowser.Server.Implementations.WebSocket
 {
@@ -66,6 +69,20 @@ namespace MediaBrowser.Server.Implementations.WebSocket
                     TimeOut = TimeSpan.FromHours(24)
                 };
 
+                #if __MonoCS__
+                //Linux: port below 1024 require root or cap_net_bind_service
+                if (Environment.OSVersion.Platform == PlatformID.Unix || Environment.OSVersion.Platform == PlatformID.MacOSX)
+                {
+                    if (Syscall.getuid() == 0)
+                    {
+                        WebSocketServer.FlashAccessPolicyEnabled = true;
+                    }
+                    else
+                    {
+                        WebSocketServer.FlashAccessPolicyEnabled = false;
+                    }
+                }
+                #endif
                 WebSocketServer.Start();
             }
             catch (Exception ex)