switched aac encoders

MediaBrowser.Api/Playback/BaseStreamingService.cs

@@ -484,7 +484,7 @@ namespace MediaBrowser.Api.Playback
             {
                 if (codec == AudioCodecs.Aac)
                 {
-                    return "aac";
+                    return "libvo_aacenc";
                 }
                 if (codec == AudioCodecs.Mp3)
                 {

MediaBrowser.Api/Playback/Hls/VideoHlsService.cs

@@ -129,11 +129,6 @@ namespace MediaBrowser.Api.Playback.Hls
 
             if (state.AudioStream != null)
             {
-                if (string.Equals(codec, "aac", StringComparison.OrdinalIgnoreCase))
-                {
-                    args += " -strict experimental";
-                }
-                
                 var channels = GetNumAudioChannelsParam(state.Request, state.AudioStream);
 
                 if (channels.HasValue)