Address review feedback and improve code style

- Moved end-of-line comments to preceding lines for better readability and to avoid potential line length issues across various files modified in previous commits.
- In the RageSoundReader_Chain constructor: Removed redundant initialization of m_iPreferredSampleRate. Replaced hardcoded 44100 with kFallbackSampleRate. Removed an unnecessary comment.
- Added braces consistently to single-statement if/else blocks across all recently modified sound system files. This enhances code clarity and maintainability by explicitly defining block scopes.

src/RageSoundManager.cpp

@@ -135,7 +135,8 @@ int RageSoundManager::GetDriverSampleRate() const
 	if( m_pDriver == nullptr )
 		return kFallbackSampleRate;
 
-	return m_pDriver->GetSampleRate(); // Returns the *actual* operating rate of the loaded driver
+	// Returns the *actual* operating rate of the loaded driver
+	return m_pDriver->GetSampleRate(); 
 }
 
 /* If the given path is loaded, return a copy; otherwise return nullptr.

src/RageSoundReader_Chain.cpp

@@ -1,4 +1,5 @@
 #include "global.h"
+#include "PrefsManager.h"
 #include "RageSoundReader_Chain.h"
 #include "RageSoundReader_FileReader.h"
 #include "RageSoundReader_Resample_Good.h"
@@ -6,6 +7,7 @@
 #include "RageSoundReader_Pan.h"
 #include "RageLog.h"
 #include "RageUtil.h"
+#include "RageSound.h"
 #include "RageSoundMixBuffer.h"
 #include "RageSoundUtil.h"
 
@@ -25,7 +27,9 @@ RageSoundReader_Chain::RageSoundReader_Chain()
 {
 	m_iPreferredSampleRate = PREFSMAN->m_iSoundPreferredSampleRate;
 	if (m_iPreferredSampleRate == 0)
-		m_iPreferredSampleRate = 44100; // Default if system default (0) is chosen
+	{
+		m_iPreferredSampleRate = kFallbackSampleRate;
+	}
 	
 	m_iActualSampleRate = -1;
 	m_iChannels = 0;

src/arch/Sound/ALSA9Helpers.cpp

@@ -230,9 +230,13 @@ RString Alsa9Buf::Init( int channels_,
 	preferred_writeahead = iWriteahead;
 	preferred_chunksize = iChunkSize;
 	if( iSampleRate == 0 )
+	{
 		samplerate = kFallbackSampleRate;
+	}
 	else
+	{
 		samplerate = iSampleRate;
+	}
 
 	GetSoundCardDebugInfo();
 

src/arch/Sound/DSoundHelpers.cpp

@@ -200,7 +200,8 @@ RString DSoundBuf::Init( DSound &ds, DSoundBuf::hw hardware,
 	waveformat.wFormatTag = WAVE_FORMAT_PCM;
 
 	bool bNeedCtrlFrequency = false;
-	if( m_iSampleRate == DYNAMIC_SAMPLERATE ) // DYNAMIC_SAMPLERATE is usually 0 or some special value
+	// DYNAMIC_SAMPLERATE is usually 0 or some special value
+	if( m_iSampleRate == DYNAMIC_SAMPLERATE )
 	{
 		m_iSampleRate = kFallbackSampleRate;
 		bNeedCtrlFrequency = true;

src/arch/Sound/RageSoundDriver.h

@@ -13,7 +13,7 @@
 class RageSoundBase;
 class RageTimer;
 class RageSoundMixBuffer;
-static const int samples_per_block = 512; // This should probably be kSamplesPerBlock or similar if it's truly const and static
+static const int samples_per_block = 512;
 
 class RageSoundDriver: public RageDriver
 {

src/arch/Sound/RageSoundDriver_AU.mm

@@ -151,7 +151,9 @@ RString RageSoundDriver_AU::Init()
 	streamFormat.mBitsPerChannel = kBitsPerChannel;
 
 	if( streamFormat.mSampleRate <= 0.0 )
-		streamFormat.mSampleRate = 44100.0;
+	{
+		streamFormat.mSampleRate = kFallbackSampleRate;
+	}
 	m_iSampleRate = int( streamFormat.mSampleRate );
 	m_TimeScale = streamFormat.mSampleRate / AudioGetHostClockFrequency();
 

src/arch/Sound/RageSoundDriver_DSound_Software.cpp

@@ -97,7 +97,9 @@ RString RageSoundDriver_DSound_Software::Init()
 	m_pPCM = new DSoundBuf;
 	m_iSampleRate = PREFSMAN->m_iSoundPreferredSampleRate;
 	if( m_iSampleRate == 0 )
+	{
 		m_iSampleRate = kFallbackSampleRate;
+	}
 	// This m_iSampleRate (driver's) is then passed as the iSampleRate parameter to DSoundBuf::Init()
 	sError = m_pPCM->Init( ds, DSoundBuf::HW_DONT_CARE, channels, m_iSampleRate, 16, g_iMaxWriteahead );
 	if( sError != "" )

src/arch/Sound/RageSoundDriver_Null.cpp

@@ -31,8 +31,9 @@ int64_t RageSoundDriver_Null::GetPosition() const
 RageSoundDriver_Null::RageSoundDriver_Null()
 {
 	m_iSampleRate = PREFSMAN->m_iSoundPreferredSampleRate;
-	if( m_iSampleRate == 0 )
+	{
-		m_iSampleRate = kFallbackSampleRate;
+    	m_iSampleRate = kFallbackSampleRate;
+	}
 	m_iLastCursorPos = GetPosition();
 	StartDecodeThread();
 }

src/arch/Sound/RageSoundDriver_OSS.cpp

@@ -195,7 +195,8 @@ RString RageSoundDriver_OSS::Init()
 
 	// Determine the target sample rate based on preference
 	int targetSampleRate = PREFSMAN->m_iSoundPreferredSampleRate;
-	if (targetSampleRate == 0) {
+	if (targetSampleRate == 0)
+	{
 		targetSampleRate = kFallbackSampleRate;
 	}
 	

src/arch/Sound/RageSoundDriver_PulseAudio.cpp

@@ -29,7 +29,9 @@ m_PulseMainLoop(nullptr), m_PulseCtx(nullptr), m_PulseStream(nullptr)
 {
 	m_ss.rate = PREFSMAN->m_iSoundPreferredSampleRate;
 	if( m_ss.rate == 0 )
+	{
 		m_ss.rate = kFallbackSampleRate;
+	}
 }
 
 RageSoundDriver_PulseAudio::~RageSoundDriver_PulseAudio()

src/arch/Sound/RageSoundDriver_WaveOut.cpp

@@ -125,7 +125,9 @@ RString RageSoundDriver_WaveOut::Init()
 	b_InitSuccess = false;
 	m_iSampleRate = PREFSMAN->m_iSoundPreferredSampleRate;
 	if( m_iSampleRate == 0 )
+	{
 		m_iSampleRate = kFallbackSampleRate;
+	}
 
 	WAVEFORMATEX fmt;
 	fmt.wFormatTag = WAVE_FORMAT_PCM;