Aww man, I would REALLY like to play this, but I can't read Japanese...
I managed to figure out how to play the PSP games I bought, but I still read that English overview thing (It's the Asia version) and asked for help on here, I believe.
Let's hope someone writes a little translation guide or something, saying which button is which.
Your wish is my command. I signed up for it and am writing a translation guide. I have the "how to sign up" if you want it. I'm working on translating the UI now.
It's taking forever to translate these status messages though...there's so many 'moods' you can pick.
edit: Focusing on the UI first because the status messages are so trivial and are taking forever.
edit2: Okay! So this game is pretty cool because you don't have to write what you want to say using JP input methods. If you type what you want to say in romaji it automatically guesses some phrases already input in. so if you type "konni---" it'll guess "こんにちは” automatically. If you know a little japanese or hiragana this will be a good way to talk.
Also I have finished a lot of the UI. I translated all of the bottom buttons pretty much and the interface for shopping and etc. So I'll work on the idolm@ster specific things next.
Do you want translations for what the president says? He doesn't have much interesting things to say.