Nostalrius Begins - Quality wow vanilla realm (1.12)

Blizzard (later on??) had an option that allowed you to play sound in background, meaning that if you alt-tabbed you'd still hear the in-game sound.

Please add this option.

Any client (patch) modification such as this will not be done. The developers are currently only working on server-sided bugs and database issues.

On another note, if you're using Windows... can't you focus the process while having it minimized to hear sounds pseudo-background?