diff --git a/bin/windows/zmusic/include/zmusic.h b/bin/windows/zmusic/include/zmusic.h
index 7de05c5fa3b..7422b58da26 100644
--- a/bin/windows/zmusic/include/zmusic.h
+++ b/bin/windows/zmusic/include/zmusic.h
@@ -67,7 +67,8 @@ typedef struct SoundStreamInfo_
 typedef enum SampleType_
 {
 	SampleType_UInt8,
-	SampleType_Int16
+	SampleType_Int16,
+	SampleType_Float32
 } SampleType;
 
 typedef enum ChannelConfig_
@@ -76,6 +77,15 @@ typedef enum ChannelConfig_
 	ChannelConfig_Stereo
 } ChannelConfig;
 
+typedef struct SoundStreamInfoEx_
+{
+	int mBufferSize; // If mBufferSize is 0, the song doesn't use streaming but plays through a different interface.
+	int mSampleRate;
+	SampleType mSampleType;
+	ChannelConfig mChannelConfig;
+} SoundStreamInfoEx;
+
+
 typedef enum EIntConfigKey_
 {
 	zmusic_adl_chips_count,
@@ -264,14 +274,14 @@ typedef struct ZMusicConfigurationSetting_
 
 
 #ifndef ZMUSIC_INTERNAL
-#ifdef _MSC_VER
+#if defined(_MSC_VER) && !defined(ZMUSIC_STATIC)
 #define DLL_IMPORT _declspec(dllimport)
-#else // !_MSC_VER
+#else
 #define DLL_IMPORT
-#endif // _MSC_VER
+#endif
 // Note that the internal 'class' definitions are not C compatible!
-typedef struct { int zm1; } *ZMusic_MidiSource;
-typedef struct { int zm2; } *ZMusic_MusicStream;
+typedef struct _ZMusic_MidiSource_Struct { int zm1; } *ZMusic_MidiSource;
+typedef struct _ZMusic_MusicStream_Struct { int zm2; } *ZMusic_MusicStream;
 struct SoundDecoder;
 #endif
 
@@ -319,6 +329,7 @@ extern "C"
 	DLL_IMPORT void ZMusic_VolumeChanged(ZMusic_MusicStream song);
 	DLL_IMPORT zmusic_bool ZMusic_WriteSMF(ZMusic_MidiSource source, const char* fn, int looplimit);
 	DLL_IMPORT void ZMusic_GetStreamInfo(ZMusic_MusicStream song, SoundStreamInfo *info);
+	DLL_IMPORT void ZMusic_GetStreamInfoEx(ZMusic_MusicStream song, SoundStreamInfoEx *info);
 	// Configuration interface. The return value specifies if a music restart is needed.
 	// RealValue should be written back to the CVAR or whatever other method the client uses to store configuration state.
 	DLL_IMPORT zmusic_bool ChangeMusicSettingInt(EIntConfigKey key, ZMusic_MusicStream song, int value, int* pRealValue);
@@ -406,6 +417,7 @@ typedef zmusic_bool (*pfn_ZMusic_IsMIDI)(ZMusic_MusicStream song);
 typedef void (*pfn_ZMusic_VolumeChanged)(ZMusic_MusicStream song);
 typedef zmusic_bool (*pfn_ZMusic_WriteSMF)(ZMusic_MidiSource source, const char* fn, int looplimit);
 typedef void (*pfn_ZMusic_GetStreamInfo)(ZMusic_MusicStream song, SoundStreamInfo *info);
+typedef void (*pfn_ZMusic_GetStreamInfoEx)(ZMusic_MusicStream song, SoundStreamInfoEx *info);
 typedef zmusic_bool (*pfn_ChangeMusicSettingInt)(EIntConfigKey key, ZMusic_MusicStream song, int value, int* pRealValue);
 typedef zmusic_bool (*pfn_ChangeMusicSettingFloat)(EFloatConfigKey key, ZMusic_MusicStream song, float value, float* pRealValue);
 typedef zmusic_bool (*pfn_ChangeMusicSettingString)(EStringConfigKey key, ZMusic_MusicStream song, const char* value);
@@ -419,4 +431,4 @@ typedef const ZMusicMidiOutDevice *(*pfn_ZMusic_GetMidiDevices)(int *pAmount);
 
 
 
-#endif
\ No newline at end of file
+#endif
diff --git a/src/common/engine/i_net.cpp b/src/common/engine/i_net.cpp
index df25c90ab66..07dc7fdd9b4 100644
--- a/src/common/engine/i_net.cpp
+++ b/src/common/engine/i_net.cpp
@@ -1040,7 +1040,7 @@ void I_NetMessage(const char* text, ...)
 	va_list argptr;
 
 	va_start(argptr, text);
-	str.VFormat(format, argptr);
+	str.VFormat(text, argptr);
 	va_end(argptr);
 	fprintf(stderr, "\r%-40s\n", str.GetChars());
 #endif
diff --git a/src/gamedata/d_dehacked.cpp b/src/gamedata/d_dehacked.cpp
index e41e1a3360f..b79cc8977cc 100644
--- a/src/gamedata/d_dehacked.cpp
+++ b/src/gamedata/d_dehacked.cpp
@@ -1227,25 +1227,14 @@ static int PatchThing (int thingy)
 		}
 		else if (linelen == 16 && stricmp(Line1, "infighting group") == 0)
 		{
-			if (val < 0)
-			{
-				Printf("Infighting groups must be >= 0 (check your dehacked)\n");
-				val = 0;
-			}
 			type->ActorInfo()->infighting_group = val;
 		}
 		else if (linelen == 16 && stricmp(Line1, "projectile group") == 0)
 		{
-			if (val < 0) val = -1;
 			type->ActorInfo()->projectile_group = val;
 		}
 		else if (linelen == 12 && stricmp(Line1, "splash group") == 0)
 		{
-			if (val < 0)
-			{
-				Printf("Splash groups must be >= 0 (check your dehacked)\n");
-				val = 0;
-			}
 			type->ActorInfo()->splash_group = val;
 		}
 		else if (linelen == 10 && stricmp(Line1, "fast speed") == 0)
@@ -1289,7 +1278,7 @@ static int PatchThing (int thingy)
 			  0xffff8000, // 8 - Orange
 			};
 
-			if (val < 0 || val > 8) val = 0;
+			if (val > 8) val = 0;
 			unsigned color = bloodcolor[val];
 			info->BloodColor = color;
 			info->BloodTranslation = val == 0? 0 : TRANSLATION(TRANSLATION_Blood, CreateBloodTranslation(color));
diff --git a/src/playsim/d_player.h b/src/playsim/d_player.h
index 3dc3acc1626..5f5c8866e3a 100644
--- a/src/playsim/d_player.h
+++ b/src/playsim/d_player.h
@@ -161,7 +161,7 @@ class FPlayerClass
 {
 public:
 	FPlayerClass ();
-	FPlayerClass (const FPlayerClass &other);
+	FPlayerClass (const FPlayerClass &other) = default;
 	~FPlayerClass ();
 
 	bool CheckSkin (int skin);
diff --git a/src/playsim/p_user.cpp b/src/playsim/p_user.cpp
index d1a0b42a411..3337a1d10a3 100644
--- a/src/playsim/p_user.cpp
+++ b/src/playsim/p_user.cpp
@@ -159,13 +159,6 @@ FPlayerClass::FPlayerClass ()
 	Flags = 0;
 }
 
-FPlayerClass::FPlayerClass (const FPlayerClass &other)
-{
-	Type = other.Type;
-	Flags = other.Flags;
-	Skins = other.Skins;
-}
-
 FPlayerClass::~FPlayerClass ()
 {
 }