diff --git a/src/Files/Files.cpp b/src/Files/Files.cpp
index fac01b7..508ba30 100644
--- a/src/Files/Files.cpp
+++ b/src/Files/Files.cpp
@@ -246,7 +246,7 @@ OSErr ResolveAlias(const FSSpec* spec, AliasHandle alias, FSSpec* target, Boolea
 {
 	*wasChanged = false;
 
-	int aliasSize = GetHandleSize(alias);
+	Size aliasSize = GetHandleSize(alias);
 
 	// the target FN is at offset 50, and the target FN is a Str63, so 50+64
 	if (aliasSize < 50 + 64)
@@ -400,4 +400,4 @@ OSErr SetFPos(short refNum, short posMode, long filePos)
 FSSpec Pomme::Files::HostPathToFSSpec(const fs::path& fullPath)
 {
 	return dynamic_cast<HostVolume*>(volumes[0].get())->ToFSSpec(fullPath);
-}
\ No newline at end of file
+}
diff --git a/src/Files/Resources.cpp b/src/Files/Resources.cpp
index ea93fe9..b59daa3 100644
--- a/src/Files/Resources.cpp
+++ b/src/Files/Resources.cpp
@@ -63,7 +63,7 @@ short FSpOpenResFile(const FSSpec* spec, char permission)
 	}
 
 	auto f = Pomme::BigEndianIStream(Pomme::Files::GetStream(slot));
-	auto resForkOff = f.Tell();
+	std::streamoff resForkOff = f.Tell();
 
 	// ----------------
 	// Load resource fork
@@ -75,8 +75,8 @@ short FSpOpenResFile(const FSSpec* spec, char permission)
 
 	// -------------------
 	// Resource Header
-	UInt32 dataSectionOff = f.Read<UInt32>() + resForkOff;
-	UInt32 mapSectionOff = f.Read<UInt32>() + resForkOff;
+	std::streamoff dataSectionOff = f.Read<UInt32>() + resForkOff;
+	std::streamoff mapSectionOff = f.Read<UInt32>() + resForkOff;
 	f.Skip(4); // UInt32 dataSectionLen
 	f.Skip(4); // UInt32 mapSectionLen
 	f.Skip(112 + 128); // system- (112) and app- (128) reserved data
@@ -88,8 +88,8 @@ short FSpOpenResFile(const FSSpec* spec, char permission)
 	// map header
 	f.Skip(16 + 4 + 2); // junk
 	f.Skip(2); // UInt16 fileAttr
-	UInt32 typeListOff = f.Read<UInt16>() + mapSectionOff;
-	UInt32 resNameListOff = f.Read<UInt16>() + mapSectionOff;
+	std::streamoff typeListOff = f.Read<UInt16>() + mapSectionOff;
+	std::streamoff resNameListOff = f.Read<UInt16>() + mapSectionOff;
 
 	// all resource types
 	int nResTypes = 1 + f.Read<UInt16>();
@@ -97,7 +97,7 @@ short FSpOpenResFile(const FSSpec* spec, char permission)
 	{
 		OSType resType = f.Read<OSType>();
 		int    resCount = f.Read<UInt16>() + 1;
-		UInt32 resRefListOff = f.Read<UInt16>() + typeListOff;
+		std::streamoff resRefListOff = f.Read<UInt16>() + typeListOff;
 
 		// The guard will rewind the file cursor to the pos in the next iteration
 		auto guard1 = f.GuardPos();
@@ -116,7 +116,7 @@ short FSpOpenResFile(const FSSpec* spec, char permission)
 
 			// unpack attributes
 			Byte   resFlags = (resPackedAttr & 0xFF000000) >> 24;
-			UInt32 resDataOff = (resPackedAttr & 0x00FFFFFF) + dataSectionOff;
+			std::streamoff resDataOff = (resPackedAttr & 0x00FFFFFF) + dataSectionOff;
 
 			// Check compressed flag
 			ResourceAssert(!(resFlags & 1), "FSpOpenResFile: Compressed resources not supported yet");
diff --git a/src/Memory/Memory.cpp b/src/Memory/Memory.cpp
index 6a574f8..294ebf2 100644
--- a/src/Memory/Memory.cpp
+++ b/src/Memory/Memory.cpp
@@ -97,7 +97,7 @@ Handle NewHandle(Size size)
 	if (size > 0x7FFFFFFF)
 		throw std::invalid_argument("trying to alloc massive handle");
 
-	BlockDescriptor* block = BlockDescriptor::Allocate(size);
+	BlockDescriptor* block = BlockDescriptor::Allocate((UInt32) size);
 	return &block->ptrToData;
 }
 
@@ -175,7 +175,7 @@ Ptr NewPtr(Size byteCount)
 #if !POMME_PTR_TRACKING
 	return new char[byteCount];
 #else
-	BlockDescriptor* bd = BlockDescriptor::Allocate(byteCount);
+	BlockDescriptor* bd = BlockDescriptor::Allocate((UInt32) byteCount);
 	return bd->ptrToData;
 #endif
 }
diff --git a/src/PommeFiles.h b/src/PommeFiles.h
index e9b45df..efaa60e 100644
--- a/src/PommeFiles.h
+++ b/src/PommeFiles.h
@@ -15,7 +15,7 @@ namespace Pomme::Files
 		SInt16			id;
 		Byte			flags;
 		SInt32			size;
-		UInt32			dataOffset;
+		std::streamoff	dataOffset;
 		std::string		name;
 	};
 
diff --git a/src/SoundMixer/cmixer.cpp b/src/SoundMixer/cmixer.cpp
index 32403ca..86f2575 100644
--- a/src/SoundMixer/cmixer.cpp
+++ b/src/SoundMixer/cmixer.cpp
@@ -163,7 +163,7 @@ void Mixer::SetMasterGain(double newGain)
 {
 	if (newGain < 0)
 		newGain = 0;
-	gain = FX_FROM_FLOAT(newGain);
+	gain = (int) FX_FROM_FLOAT(newGain);
 }
 
 void Mixer::Process(int16_t* dst, int len)
@@ -398,8 +398,8 @@ void Source::RecalcGains()
 {
 	double l = this->gain * (pan <= 0. ? 1. : 1. - pan);
 	double r = this->gain * (pan >= 0. ? 1. : 1. + pan);
-	this->lgain = FX_FROM_FLOAT(l);
-	this->rgain = FX_FROM_FLOAT(r);
+	this->lgain = (int) FX_FROM_FLOAT(l);
+	this->rgain = (int) FX_FROM_FLOAT(r);
 }
 
 void Source::SetGain(double newGain)
@@ -425,7 +425,7 @@ void Source::SetPitch(double newPitch)
 	{
 		newRate = 0.001;
 	}
-	rate = FX_FROM_FLOAT(newRate);
+	rate = (int) FX_FROM_FLOAT(newRate);
 }
 
 void Source::SetLoop(bool newLoop)