...I couldn't figure out how to get the music out of the files like you can the other Lego games.
Download and install QuickBMS, and get the "Traveller's Tales games DAT files extractor (script 0.3) (*.dat) (experimental)" BMS script all from here: Luigi Auriemma (
http://aluigi.altervista.org/quickbms.htm)
Save the BMS script to where you installed QuickBMS.
Drag the script onto QuickBMS.exe.
Select one of the .dat files from either game.
Create a new directory elsewhere on your computer. Save the files here.
Wait for everything to extract, then rinse and repeat, each to separate folders.
Make a copy of your game folder.
In the copy, delete all the *.dat files.
Open the folders you extract the files to, and copy everything inside. For LEGO Star Wars Complete Saga, you should be copying folders and files such as "Audio", "CHARS", "PC" and more, but not the folder everything is contained in.
Paste all files in the copied game folder.
Play to test if everything is correct.
^ This converts the GAME[#].DAT files into the folders (audio, chars, movies, etc). What's more, the game can be run directly from a folder solely containing the extracted folders.