Here's an example of the music player. It doesn't need any of the required JJ2 files, as the calls have been inserted before the file loads go about their business.

The music is (c) Necros.

To change the music file, change 0xD1150 in the EXE to the music file's name. Remember, if it's J2b, do not include the .j2b extention. And remember to end the filename string with an 0x00.