Hey, Im gonna tell you how to change the lobby song in Combat Arms. First you need the song you want in MP3. Rename the song you want to BGM_LOOP. Make sure your song is a READ ONLY file if not, Right click the song and go to properties and check the box READ ONLY. Now go to your Combat Arms Folder, Double-click Game, and then BGM. You will see a BGM_LOOP file there, Put that somewhere else so you won't replace it. Now get the song you want and move it to the BGM folder and there you go, You now have your favorite song as a lobby song in Combat Arms.
Start Combat Arms
Your song will play
Note: Please read carefully or you might make a mistake ! /yea
All credits go to the person who taught me this and who figured this out !