I always had the curiosity to know what did PSN stand for, hehehe. I wouldn't do the dowloading thing, like I said, the PSP is my brothers. But, if I ever come across a B&G I could try that. I didn't know it was a remake, not that it was for PSP.
Its actually a port of BtN and BtN for girls, never released in NA. They combined them into one cart. Unfortunately, the port isn't as good as the original or the psn version as some features were removed.
If you have a ps3, the game is playable on there as well.