Don't know if I'll turn off the music completely, because I love better music system (would be nice if I could get enhanced music control to work though), but I'll definitely turn music down to hear these great sounds. I do remember hearing some of these sounds in Neverwinter Nights...but it was on one or two Presistant Worlds I used to play on online years ago, so maybe it wasn't in the original game? I don't remember lol. I think I remember some of these sounds appearing in the Morrowind mod Atmospheric Sound Effects too? Either way they're great sounds.
Is it just me, or do those city sounds seem similar to the ones in Baldur's Gate 2? Not that I'm complaining

Can't wait for this to come out as I love immersion mods.
The sounds from Neverwinter Nights might be the voices you hear in the city atmospheres. I took them from Atmospheric Sound Effects.

But I'm thinking of changing them, recording new ones, as the ones in ASE are too low in quality. (They have a very low sample rate)
Recording new ones also allow me to get voices from the community to get different races to talk aloud.