...I want to thank Darth "Snake" Nefelim for sending those tunes and make it avaible to other game music lovers (I was trying to send this game rip too, but you are faster than me :)).
Second... The music is brilliant! When I first heard those tunes, I loved it! They're full of excellent ideas and mysterious sounds. But sometimes, you will hear strong tunes encouraging to fight for survival (Especially "Dirt" by Khyron, playing when you're facing squad of perfectly trained Space Marines).
Third... Download this game rip fast as you can! All tunes from RETURN TO NA PALI are one of best MOD soundtracks I've ever heard!
Fourth... If you want to listen combat or tension pieces use (again) MODPLUG Tracker