Hello, and welcome! 🍻 Sounds fun! It is feasible. I'd recommend you to start from having KotOR Tool first -- it's a handy utility to extract the game files; including several sound-effects/SFX which can't be accessed directly through the game directory. Voice-overs/VO can be obtained via streamwaves [K1]/StreamVoice [TSL], background-music/BGM through streammusic [K1/TSL], and some other SFX and/or soundsets from streamsounds [K1/TSL] folder. Second, to have SithCodec with you