Aha! I think I *may* know what your problem is.
I just looked up some wavs created by my audio app. The bit rate is there, but it is exactly as I mentioned it wold be above: depth * sample rate. In my case, they are both 24-bit, 48, which gives a bit rateof 1152k.
Another wav I have is 24 bit, 48k, and has a bit rate of 2304k. Why? It's a stereo track.
This simple formula hols true for all wavs on my box.
In your first post, the first track is mono @ 24*96k = 2304k.
I don't know what the hell your second track is. 6144k / 24 bit = 256, which is suggestive, but I don't know of what yet. It's an absurd sample rate. It's as if there were a BUNCH of tracks munged into that wav.
How large is that track? Could you post a link to it?