UPDATE: I got it to work! Turns out adding -dsound to the arguments allows the sound to work properly without crashing on the cinematics.
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Running Homeworld on ReactOS didn't go as well as I had hoped. Sound issues prevents the game from running normally and graphical problems make it impossible to play the game in windowed mode.
Homeworld's video player is breaking the OS when it tries to play sound. I wouldn't have a clue why though.
Debug Log: https://gist.github.com/iownall555/4e91fd0a6d0e5133c330691b163fadbd
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https://www.youtube.com/watch?v=j9iBgpy71bs
Nvidia graphics on Linux is just wonderful.
Not pictured: Horrible diagonal tearing courtesy of Optimus.
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https://www.youtube.com/watch?v=KTBFGeFmABg