The N64 music pack plays the Grabbag theme song from the N64 version of Duke Nukem 3D (Duke Nukem 64) in the main menu using EDuke32. Optionally, it can disable level music as the N64 version did.
This pack also serves as a full soundtrack, available in both FLAC and OGG, for your listening pleasure.
Ensure you do not have any loose copies of "duke3d.def" in your EDuke32 folder.
Copy ww_dn64_music_pack.zip to the "autoload/" subdirectory of your EDuke32 directory. If you would prefer "Aggressive Mode" (see below), copy ww_dn64_music_pack_aggressive.zip there in addition.
It is crucial to use the latest EDuke32 synthesis builds.