You're missing a track. (possible spoilers in description)

After reviewing the soundtrack and comparing to the missions im playing right now i noticed that the Passive Inflight for missions in Loki is not there.

Its the tune that plays when you jump into the system from Proxima as well as the Behemoth disaster. Sounds similar to the WC3: HotT starting theme.

Any chance we could have that one made available?

Confirmed. The Loki ambient music (ambient_b_04.ogg in the game files) appears to be missing from the OST.

@Colonelnick: the music file can be extracted from the game's *.vp files using one of the editors/viewers on the linked page. The soundtrack you are looking for should be in hermes_sounds.vp, then in data\music and is called ambient_b_04.ogg.