Look around or look at the help file, all sound editors have someplace where they tell you if it's 8 bit or 16 bit or whatever, along with the frequency and stereo or mono. That last should be obvious, every sound editor I've ever seen had a single waveform for mono and a split screen for stereo.
Got a video of the beginning of a career mod I'm working on, some places you can hear the engine sound. Although I'm troubleshooting an unwanted sound loop in one of the creaking noise files so I replaced all the sound files except the two for the engine to test it, which brought them godawful screeching seagulls back.
Your questions got me interested, so I replaced the amplified stock SH-4 diesel sound with an Alco locomotive sound I stole from a train simulator and cranked that up. Once I get that tweaked I intend to upload it.
