There's no need to be angry with us... When you see "In-game soundtrack" you should expect to get music from the game not the "official published soundtrack". In many cases there was no such thing ever published.
Our team try hard to give you the best additional content we can. And sometimes, if we can't find eg. the list of the tracks we must choose.
We could choose not to tag at all or tag it with the name of the game. We choose the second aproach.
Some may say it's wrong but I guess there's more than only one answer to what we do, and some may like it, others - not.
Let us hope you will appreciate the content any way. And if you find any track that could help us update any of this - we'll appreciate it!
Mean while, that's what we decide to do, to share with you whatever we can get, even if some information may be missing (we are not gods, you know... not yet ;) )
May the Force b with You!

we'll work on it :)