I asked AlienEclipse if I could have a look at the files and try to help.
I took a quick look this morning, and given the time diff from here to NZ, I figured I'd post up what I found while AE's sleeping.
I'm pretty sure I know what's confusing CF. From the headers, it looks like AE is using iTunes to encode which seems to be using v2.3 of the ID3 tags (weird, but maybe it's an older iTunes?). Anyway, I'd bet you're only looking for v2.4 tags. The v2.3 tags are max 3 characters, so (for example) you'd see "TRK" instead of "TRCK". I think you'll need to search for both.
The v2.4 tag frames are defined here:
...and the v2.3 tag frames are defined here: