http://destructavator.com/92dl/proj_17n_quad_4_12_G3_TBX150.flac
This is very very good, the rhythm sound is absolutely spot-on. I have one suggestion and it's not even about quality -- I know you're adding more stuff, but the track gets a little dull around 1:30 with the same phrases playing over and over. I'd recommend adding a faint countermelody to break it up a bit, either synth or very subtle non-throaty guitars.
http://destructavator.com/92dl/UFO_Air_Combat_3_20d_TBX.flac
The guitars here now sound a lot more natural than in previous versions, which is awesome, but I'd argue that for UFO:AI that's actually not a good thing because the more artificial sound fits the game better. However, the solo at the end is a huge leap forward over previous versions -- I'd be happy to transplant
that over to the current version in SVN.
Regards,
Winter