1.Make a folder, now if you need some help, you can look into the music folders for double checking. Now make a icon, REMEMBER: The size needs to be 96 x 48 pixels.
2.Now, find the music. (For example, i will use Pizza Tower's music.) If it isn't a .OGG, Open up audacity THEN export it as .OGG. Now after that, make the .OGG file louder. (Because for some reason exporting other music files into .OGG's makes the music more silent.) Once done, you can do some tricks to spice up some of your music packs.
3.Now that we are almost there, here are some extra thing you may want to reconsider... Do you remember about the game themes? Probably yes. If so please do what i say:
1. Make a entire new folder with the name of the theme.
2. Add the music that will play instead of the normal one.
Now, if you want SPECIAL conditions to your music pack, you will need a info.txt. Now there will be these parameters:
continue music after death=
These parameters need to either have "yes" or "no" at their side. Each one is self explanatory.