It is nice to have this collection in better quality, also the new cover looks a hell of a lot better than the previous one.
Thanks!

One problem is that some of the tacks are labelled wrong. I have below the correct and official ones taken from the GBA version's soundtest:

1-02 DK Theme
1-03 DK Island Swing
1-04 Simian Segue
2-02 DK Theme GB
2-03 DK Island Swing GB
2-04 Simian Segue GB
3-01 DK Theme GBA
3-03 DK Island Swing GBA
3-04 Simian Segue GBA
4-30 Kannon's Klaim
4-31 Lose Life (Kannon's Klaim)
4-32 Stage Clear (Kannon's Klaim)
4-33 Diddy Clear (Kannon's Klaim)
4-34 Dixie Clear (Kannon's Klaim)
7-11 Kannon's Klaim GBA

I hope that this will help

I really don't know how this whole confusion with the first few tracks happened, but it's been going on for years.

Without actually checking which one is correct, I would have assumed that the map theme is "Simian Segue" and the Jungle stage theme is "DK Island Swing".

The "title music" as you may generally call it, is officially called "Theme".

Yet, for some reason, people remove the "Theme", and move the next two names up, so the main theme because "Simian Segue", and the map theme is erroneously titled "DK Island Swing".

But what do they then call the "Jungle stage music"? Well that's simple. "Jungle Groove", which is the name of the arranged version DK Island Swing. In short:

Main theme = Theme
Map = Simian Segue
Jungle = DK Island Swing

Oh, and the Final Boss music from DKL is also unused.

Also, due to the Mines stage music from DKC/DKL2 never being on any soundtrack, there was never an official title. The "Mining Melancholy" is as far as I'm aware, just a made up title that fit the alliteration of most of the game's soundtrack.