Key changes:
- Added "Sample Rate" to `ScreenOptionsGraphicsSound` with choices:
- "Default" (resolves to 44100 Hz for now)
- "44100 Hz"
- "48000 Hz"
- Created a new ConfOption "PreferredSampleRate" in `ScreenOptionsMasterPrefs.cpp` mapping UI choices to the integer values (0, 44100, 48000) for the existing `m_iSoundPreferredSampleRate` preference.
- Updated relevant sound drivers:
- DirectSound (RageSoundDriver_DSound_Software): Primary buffer now attempts to use the preferred rate. Secondary buffers already handled it correctly.
- WaveOut (RageSoundDriver_WaveOut): Already handled 0 as 44.1kHz correctly.
- PulseAudio (RageSoundDriver_PulseAudio): Ensured m_InitStream uses the constructor-initialized rate based on preference.
- AudioUnit (RageSoundDriver_AU): Already handled 0 as 44.1kHz and attempts to set hardware rate.
- OSS (RageSoundDriver_OSS): Updated to read and apply the preferred sample rate.
- WDMKS (RageSoundDriver_WDMKS): Updated to pass the resolved preferred rate to its stream opening logic.
- Null (RageSoundDriver_Null): Already handled 0 as 44.1kHz correctly.
- Updated `RageSoundReader_Chain` constructor to use the preferred system sample rate for its internal default.
- Added English localization for the new option title and explanation.
The implementation ensures that if the preference is 0 (Default), the system currently defaults to 44100 Hz across all drivers. This lays the groundwork for future dynamic hardware rate detection. A game restart is recommended for the new sample rate to take full effect.
