This is a small patch made by Sen-Chan to cause dungeon music to play when inside any of Morrowind's many caves, ruins, etc. It was made with Better Music System in mind, but I believe it will work without that mod, as it redirects to Oblivion's default Dungeon music folder. It has not yet been fully tested, and as such you may find a dungeon or two that we missed--for the names of the locations I was working on memory only, and it has been a long time since I played Morrowind.
That said, if you find any we missed or changed improperly, use this thread to let us know.
Load order shouldn't matter at all, as the only masters are Oblivion.esm and Morroblivion.esm (latest version)
http://www.mediafire.com/file/1259cfrnwsk0e7j/Morroblivion%20Dungeon%20Interior%20Music.rar
Link to Better Music System is in the included Readme file.
Enjoy!
Shorin_ryu and Sen-Chan

Great stuff! Downloading...
Great stuff! Downloading...