The second track also has the dark world theme. The first track has the Sages theme, Midna's theme, Overworld theme, Second half of End Credits, and Zant's theme I believe.
That's true - you are correct. However - I segmented some of the tracks for people who wanted to listen to specific songs. If you guys want the rest, then I can post it later (but I'm sure everyone's found a download link for the ost by now...)