Allow Selection of Audio Output in Big Box (Independent of Windows)

📋Summary

Introduce a setting in Big Box to manually choose the audio output device, similar to how video output can already be selected. This would give users full control over where sound is played—especially in setups with multiple screens and audio sources.

❗Problem

Currently, Big Box relies on the system’s default audio device, and there is no way to specify a dedicated audio output within the application. This can be problematic in multi-display environments where different screens are connected to different audio systems (e.g., one with a soundbar, another with PC speakers). If the user switches displays but forgets to change the default audio device in Windows, Big Box continues playing audio through the wrong source.

💡Proposal

Add a global setting in Big Box to select a specific audio output device from a list of those available on the system. This could mirror how RetroArch handles audio device selection, and could optionally be paired with video output selection to provide a seamless AV switch when moving between displays.

Example use case:

A user has a monitor with desktop speakers and a TV with a connected soundbar. When launching Big Box to play on the TV, they want both video and audio to route through the TV setup automatically—without needing to change Windows audio settings manually.

✅Benefits

• Provides better support for multi-screen setups with distinct audio outputs

• Enables a more console-like experience when switching between TV and desktop play

• Pairs well with user profiles and emulator configuration switching

• Eliminates reliance on system default audio settings and avoids incorrect routing

• Helps create an immersive, polished media center or home theater PC setup 🎮📺🎵