Fix typos (#125)

docs/modules/core/pages/audio/audio.adoc

@@ -181,7 +181,7 @@ myAudioNode.stop();
 Whether an Audio Node plays continuously or only once, depends on the Loop properties you have set above!
 ====
 
-You can also start playing instances of an AudioNode. Use the `playInstance()` method if you need to play the same AudioNode multiple times, possibly simulatenously. Note that changes to the parameters of the original AudioNode do not affect the instances that are already playing!
+You can also start playing instances of an AudioNode. Use the `playInstance()` method if you need to play the same AudioNode multiple times, possibly simultaneously. Note that changes to the parameters of the original AudioNode do not affect the instances that are already playing!
 
 [source,java]
 ----
@@ -288,7 +288,7 @@ a|0.0006f
 |===
 
 .  Activate a Environment preset
-**  Either use a default, e.g. make you scene sounds like a dungeon environment:
+**  Either use a default, e.g. make your scene sounds like a dungeon environment:
 +
 [source,java]
 ----