Fixed #115

Author: devgianlu

core/src/main/java/xyz/gianlu/librespot/FileConfiguration.java

@@ -151,14 +151,11 @@ public boolean preloadEnabled() {
 
     @Override
     public float normalisationPregain() {
-        float result;
         Object raw = config.get("player.normalisationPregain");
 
-        if(raw instanceof Double)  result = ((Double) raw).floatValue();
-        else if(raw instanceof Integer) result = ((Integer) raw).floatValue();
+        if (raw instanceof Double) return ((Double) raw).floatValue();
+        else if (raw instanceof Integer) return ((Integer) raw).floatValue();
         else throw new IllegalArgumentException(" normalisationPregain is not a valid number: " + raw.toString());
-
-        return result;
     }
 
     @NotNull

core/src/main/java/xyz/gianlu/librespot/player/Player.java

@@ -524,12 +524,12 @@ public void close() {
 
     @Nullable
     public Metadata.Track currentTrack() {
-        return trackHandler.track();
+        return trackHandler == null ? null : trackHandler.track();
     }
 
     @Nullable
     public Metadata.Episode currentEpisode() {
-        return trackHandler.episode();
+        return trackHandler == null ? null : trackHandler.episode();
     }
 
     @Nullable