All my files appear to be compressed with VBR. Say I want CBR. I looked in the compression options and I see no way of specifying this. There's a dropdown box for the bit rate you want to encode at, which most people would assume means the thing will encode with CBR, but there's also two radio buttons for high and low qualities. Am I right in saying that technically there shouldn't be such a thing as high or low quality 192kbps? The menu is a tad confusing.

I assume that it means high or low quality VBR around 192 kbps, but I can't see anything resembling a CBR option.