This is the UT3 soundtrack from the official UT3 site. 

01_UT2007_MenuTheme.mp3 
02_ONS01Mix.mp3
03_Announcer_Male_KillingSpree.mp3 
04_Mech8Mix.mp3
05_Announcer_Female_PrepareForBattle.mp3
06_GoDown_Mix.mp3
07_RomNecris02_BeatMix.mp3
08_Taunts_Malcolm_AhHellNo.mp3
09_UT2007_MenuTheme2.mp3
10_RomUT02Mix.mp3
11_Announcer_Male_DoubleKill.mp3
12_RomNecris01_AmbientTheme.mp3
13_GoDown_SuspenseTheme.mp3
14_RomNecris02_VictoryTheme.mp3
15_LockdownMix.mp3
16_RomNecris01_VictoryTheme.mp3
17_Announcer_Female_NewOpponent.mp3
18_Outpost_SuspenseTheme.mp3
19_RomUT06_ActionTheme.mp3
20_SpaceDnB_VictoryTheme.mp3

Plus I also added 15 sounds that are currently on the offical UT3 website like button sounds and all that.

Download it from our <a href="http://www.dfbgaming.com/modules.php?name=Downloads&amp;d_op=viewdownload&amp;cid=32#cat"> Downloads Section</a>