I'm a little unclear by what you mean when you say that you put it in your main file. Do you mean that you are putting the file in the Lotro program directory? If so, that is not what you should do. Go into your documents directory and look for the Lord of the Rings Online directory. In that directory, make another directory and name it "Music". That is where you should put all your abc files. You can have sub-directories in that directory but all your abc's must be in that music directory.