Fixed TTS using StreamElements. Fixed several issues.

TTSListening.cs

@@ -11,19 +11,23 @@ namespace TwitchChatTTS
 {
     public class TTSListening : IHostedService
     {
+        private const string TTS_API_URL = "https://api.streamelements.com/kappa/v2/speech";
+
         private readonly AudioPlaybackEngine _playback;
         private readonly TTSPlayer _player;
         private readonly TTSConsumer _consumer;
         private readonly IDisposable _subscription;
+        private readonly User _user;
         private readonly ILogger _logger;
 
 
-        public TTSListening(AudioPlaybackEngine playback, TTSPlayer player, TTSPublisher publisher, TTSConsumer consumer, ILogger logger)
+        public TTSListening(AudioPlaybackEngine playback, TTSPlayer player, TTSPublisher publisher, TTSConsumer consumer, User user, ILogger logger)
         {
             _playback = playback;
             _player = player;
             _consumer = consumer;
             _subscription = publisher.Subscribe(consumer);
+            _user = user;
             _logger = logger;
         }
 
@@ -115,7 +119,7 @@ namespace TwitchChatTTS
 
                         try
                         {
-                            string url = $"https://api.streamelements.com/kappa/v2/speech?voice={message.Voice}&text={HttpUtility.UrlEncode(message.Message.Trim())}";
+                            string url = $"{TTS_API_URL}?key={_user.StreamElementsOverlayKey}&voice={message.Voice}&text={HttpUtility.UrlEncode(message.Message.Trim())}";
                             var nws = new NetworkWavSound(url);
                             var provider = new CachedWavProvider(nws);
                             var data = _playback.ConvertSound(provider);