Update hisplayer-api.md

Author: OskarFreestyle

hisplayer-api.md

@@ -447,9 +447,24 @@ Obtain the ID of a certain caption of a certain player. The **playerIndex** is a
 #### public string GetCaptionLanguage(int playerIndex, int ccTrackIndex)
 Obtain the language of a certain caption of a certain player. The **playerIndex** is associated with the index of the element of **Multi Stream Properties**, e.g. the index 0 is the element 0 in the list.
 
-### public void SelectCaptionTrack(int playerIndex, int ccTrackIndex)
+#### public void SelectCaptionTrack(int playerIndex, int ccTrackIndex)
 Select a certain caption of a certain stream to be used. Before using this functions is recommended to use GetCaptionTrackList in order to know all the information about the captions. The **playerIndex** is associated with the index of the element of **Multi Stream Properties**, e.g. the index 0 is the element 0 in the list.
 
+#### public HisPlayerAudioTrack[] GetAudioTrackList(int playerIndex)
+Provide information about all the audio tracks of a certain stream. The **playerIndex** is associated with the index of the element of **Multi Stream Properties**, e.g. the index 0 is the element 0 in the list.
+
+#### public int GetAudioCount(int playerIndex)
+Obtain the number of audio of a certain stream. The **playerIndex** is associated with the index of the element of **Multi Stream Properties**, e.g. the index 0 is the element 0 in the list.
+
+#### public string GetAudioID(int playerIndex, int audioTrackIndex)
+Obtain the ID of a certain audio of a certain player. The **playerIndex** is associated with the index of the element of **Multi Stream Properties**, e.g. the index 0 is the element 0 in the list.
+
+#### protected string GetAudioLanguage(int playerIndex, int audioTrackIndex)
+Obtain the language of a certain audio of a certain player. The **playerIndex** is associated with the index of the element of **Multi Stream Properties**, e.g. the index 0 is the element 0 in the list.
+
+#### protected void SelectAudioTrack(int playerIndex, int audioTrackIndex)
+Select a certain audio-track of a certain stream to be used. Before using this functions is recommended to use GetAudioTrackList in order to know all the information about the audio-tracks. The **playerIndex** is associated with the index of the element of **Multi Stream Properties**, e.g. the index 0 is the element 0 in the list.
+
 #### protected void EnableABR(int playerIndex)
 Enables the ABR to change automatically between tracks. The **playerIndex** is associated with the index of the element of **Multi Stream Properties**, e.g. the index 0 is the element 0 in the list.