diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0623c86..87091ef 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -44,5 +44,7 @@ target_link_libraries(MonoSlicer
     PUBLIC
         juce::juce_recommended_config_flags
         juce::juce_recommended_lto_flags
-        juce::juce_recommended_warning_flags
 )
+
+# Suppress JUCE / VST3 SDK warnings globally for all targets.
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-deprecated-declarations -Wno-implicit-int-conversion-on-negation")
diff --git a/Source/PluginProcessor.cpp b/Source/PluginProcessor.cpp
index 69c3a8c..36a5495 100644
--- a/Source/PluginProcessor.cpp
+++ b/Source/PluginProcessor.cpp
@@ -510,10 +510,9 @@ void MonoSlicerProcessor::refreshFolderList()
     if (!currentFile.existsAsFile()) return;
 
     auto dir = currentFile.getParentDirectory();
-    juce::DirectoryIterator iter(dir, false, "*.wav;*.aiff;*.flac;*.ogg");
-    while (iter.next())
+    for (const auto& entry : juce::RangedDirectoryIterator(dir, false, "*.wav;*.aiff;*.flac;*.ogg"))
     {
-        auto f = iter.getFile();
+        auto f = entry.getFile();
         if (f.existsAsFile())
         {
             folderFiles.add(f);
diff --git a/Source/WaveformDisplay.cpp b/Source/WaveformDisplay.cpp
index f82244b..11b1447 100644
--- a/Source/WaveformDisplay.cpp
+++ b/Source/WaveformDisplay.cpp
@@ -226,9 +226,11 @@ void WaveformDisplay::paint(juce::Graphics& g)
     drawSliceMarkers(g, waveArea);
 
     // Scrollbar at bottom
-    hScrollBar.setBounds(bounds.getBottomLeft().getX(),
-                         bounds.getBottom() - scrollbarHeight,
-                         bounds.getWidth(), scrollbarHeight);
+    hScrollBar.setBounds(juce::Rectangle<int>(
+        static_cast<int>(bounds.getBottomLeft().getX()),
+        static_cast<int>(bounds.getBottom() - scrollbarHeight),
+        static_cast<int>(bounds.getWidth()),
+        static_cast<int>(scrollbarHeight)));
 }
 
 void WaveformDisplay::drawKeys(juce::Graphics& g, juce::Rectangle<float> bounds)
@@ -539,7 +541,7 @@ void WaveformDisplay::mouseDown(const juce::MouseEvent& e)
     if (e.getPosition().getX() < static_cast<int>(keyArea.getWidth()))
     {
         float rowHeight = keyArea.getHeight() / 12.0f;
-        int row = static_cast<int>((e.getPosition().getY() - keyArea.getY()) / rowHeight);
+        int row = static_cast<int>((static_cast<float>(e.getPosition().getY()) - keyArea.getY()) / rowHeight);
         row = juce::jlimit(0, 11, row);
         int midiNote = keyRowToMidiNote(row);
 
@@ -664,9 +666,6 @@ void WaveformDisplay::mouseWheelMove(const juce::MouseEvent& e, const juce::Mous
     // Handle horizontal scrolling (trackpad 2-finger horizontal drag)
     if (std::abs(wheel.deltaX) > 0.001f)
     {
-        int total = getNumSamples();
-        int visible = static_cast<int>(static_cast<float>(total) / zoomFactor);
-        float maxOffset = static_cast<float>(juce::jmax(1, total - visible));
         scrollOffset -= wheel.deltaX * 0.02f / zoomFactor;
         scrollOffset = juce::jlimit(0.0f, 1.0f, scrollOffset);
         syncScrollBar();