Based on Freelancer's official Soundtrack release, those versions were
created as a replacement for the already remade musics. The new versions offer better loops (albeit not perfect) and are less dynamic.
This is to make sure players can hear the different instruments even in
the heat of battle. Where usually a lot of frequencies disappear.
There is a dummy freeflight sound in nnvoice.utf, which has been added by JFLP. A proper audio file for this entry was already in nnvoice.utf, just not used. This one is now used in place of the dummy sound.
JFLP's patch notes mentioned adding a dummy entry for anomaly_detected to fix a warning. In the FL Beta audio files however, there is a proper audio entry that says 'anomaly detected', which sounds just fine. This has been added to nnvoice.utf. Also the entry for it in voices_recognizable.ini has been given an attenuation value to reduce the loudness and a duration.
Both mission 1 and 13 use a few voice dialogs that weren't registered as 'voice' files in story_sounds.ini. As a result, if you were to play those missions with the sound effects disabled, you wouldn't be able to hear them. The changes in this commit should rectify that.
