Rhythm Game Editor

Japanese	English
最初から	Start at Beginning
続きから	Continue from Saved Spot
エディットプレイ	Edit Play
エディット鑑賞モード	Edit Appreciation Mode
おまかせモード	"Leave it to Me" Mode

To start, you have to choose either the first option or the last option. The difference between the two options is the amount of things you can customize right-off-the-bat. The first option allows you to change everything at the beginning, it's a very long and tedious process. It's usually better to choose the last option to get most of the settings automatically generated, then slowly edit everything to the way you want.

The 2nd option allows you to load and edit a previous custom note chart that you have created.

The 3rd option allows to play your custom note chart.

The 4th option allows to to watch the character dance and sing. You don't have to worry about pressing notes and you can take screenshots by pressing the R button.

The last option attempts to generate everything automatically. It's the best way to get everything quickly set up, but you'll probably have to change many of the notes afterwards because they won't match with the song very well.

Make sure the bitrate of the .mp3 you're going to use is not a HUGE one (eg. 320kbps) the song will cut slightly while playing because the PSP has to buffer the song.
A 128kbps song file works fine.