Extract metadat from iPod?

[Jagdriver]

Referencing this:

http://pinouts.ru/data/ipod_pinout.shtml

Where do you suppose IDv3 tag metadata is located? I presume for Firewire it's 22,24, 26, and 28, whereas for USB it's 25 and 27. Is this right? I'm looking to extract the ARTIST > SONG TITLE from whatever track an iPod is playing at present.