Below are some basic instructions on how to put your own favorite music track in almost any Star Wars: Empire at War and Forces of Corruption mod game menu. Please note I'm assuming the way that I figured this out was based on how the files were set up in the program directory of the mod I'm making "Rise of the Shadows" which is basically a template or altered version of the Absolute Corruption 2.4 mod. Hopefully the directory in which your folders are setup is very similar to the one I have which is reflected on the instructions given. If not please make determinations and adjustments accordingly and REMEMBER TO MAKE A BACK COPY OF YOUR EMPIRE AT WAR FILES, just in case. Please also note that you will need at least a basic XML editor program (you can find one as simple as a 1.0 version for free download; trust me I know, because that's what I'm using to make the "Rise of the Shadows" mod when it comes to coding. Anyways, here are the steps below to follow in putting your favorite music song into the game mod:
Step 1: Acquire an mp3 file track song
Step 2: Go to C:\Program Files\LucasArts\Star Wars Empire At War Forces of Corruption\Mods\(Whatever the title is for your respective mod, e.g.:ACM2.5)\Data\Audio\Music
Step 3: Copy and paste the mp3 file track song that you want to play to the Music folder shown from Step 2
Step 4: Use an XML editor (for example I used a free downloadable version of XML 1.0 as my application) and open C:\Program Files\LucasArts\Star Wars Empire at War Forces of Corruption\Mods\(Whatever the title is for your respective mod, e.g.:ACM2.5)\Data\XML\MUSICEVENTS folder
Step 5: After opening the XML file folder mentioned from Step 4, open Document\MusicEvents\MusicEvent\Files, then right click, select add,and then selcect text
Step 6: A text entry menu should pop up in your XML editor allowing you to enter the desired text. Type in exactly the text as it appears for the name of your song, then add ".mp3" after the typed text, and click "Ok" or press enter. For example if you are using an mp3 song that says "Star_Wars_Episode_3_Revenge_of_the_Sith-_Battle_of_the_Heroes" type "Star_Wars_Episode_3_Revenge_of_the_Sith-_Battle_of_the_Heroes.mp3" as the text and click "Ok" or press enter.
Step 7: To check if you have followed the steps correctly, launch the "Rise of the Shadows" mod and wait for the game menu to appear. When it does it should be playing the desired song that you have selected accordingly.
Hope this helps,