Replace your original unnamed_41.bin in dt_07.img with
your favorite one from the downloaded file archive!
How to install via GGS:
-Open dt07.img with Game Graphic Studio (GGS).
-Search for unnamed_41.bin in the list on the left side.
-Right click on unnamed_41.bin and choose "Import a file over this one".
-Select your favorite unnamed_41.bin-file from the downloaded file archive
and wait until GGS has finished importing.
-Done!