Add Hou Plus Demo BGM and update BGM descriptions

 - Update descriptions to say "New Mangagamer BGM" instead of "New BGM"

Update/init.txt

@@ -133,17 +133,18 @@ void main()
 	// GAltBGM controls which of these are selected
 	ModAddBGMset("New BGM", "Placeholder", "BGM");
 	ModAddBGMset("GIN's BGM", "Placeholder", "OGBGM:BGM");
+	ModAddBGMset("Hou+", "Placeholder", "HouPlusBGM:BGM");
 
 	// GAltSE controls which of these are selected
 	ModAddSEset("New SE", "Placeholder", "SE");
 	ModAddSEset("GIN's SE", "Placeholder", "OGSE:SE");
 
 	// Audio presets the user can select, consisting of a combination of the BGM and SE flags
 	ModAddAudioset(
-		"New BGM/SE",
-		"Use the new Background Music (BGM) and Sound Effects (SE) introduced by MangaGamer in the April 2019 update, played with the Console timings.",
-		"JP: New BGM/SE",
-		"JP: Use the new Background Music (BGM) and Sound Effects (SE) introduced by MangaGamer in the April 2019 update, played with the Console timings.",
+		"New Mangagamer BGM/SE",
+		"Use the new Background Music (BGM) and Sound Effects (SE) introduced by MangaGamer in the April 2019 update",
+		"JP: New Mangagamer BGM/SE",
+		"JP: Use the new Background Music (BGM) and Sound Effects (SE) introduced by MangaGamer in the April 2019 update",
 		0, // GAltBGM
 		0, // GAltBGMFlow
 		0, // GAltSE
@@ -169,5 +170,28 @@ void main()
 		1  // GAltSEFlow
 	);
 
+	ModAddAudioset(
+		"Hou+ Demo BGM",
+		"This option replaces 16 BGM with BGM from the Higurashi Hou+ Demo. It uses the same tracks from nerve as the New MangaGamer BGM, but the AI-D-IA tracks are different.
+
+		Some are remastered versions of MangaGamer's replacements, while others were newly composed by xaki.
+
+		This option is not available for Chapters 5-8 and Rei because most of their music isn't in the Hou+ demo.
+
+		All other tracks will use the New Mangagamer BGM and GIN's/Original SE.",
+		"JP: Hou+ Demo BGM",
+		"JP: This option replaces 16 BGM with BGM from the Higurashi Hou+ Demo. It uses the same tracks from nerve as the New MangaGamer BGM, but the AI-D-IA tracks are different.
+
+		Some are remastered versions of MangaGamer's replacements, while others were newly composed by xaki.
+
+		This option is not available for Chapters 5-8 and Rei because most of their music isn't in the Hou+ demo.
+
+		All other tracks will use the New Mangagamer BGM and GIN's/Original SE.",
+		2, // GAltBGM
+		1, // GAltBGMFlow
+		1, // GAltSE
+		1  // GAltSEFlow
+	);
+
 	CallScript( "flow" );
 }