I haven't really looked. I found a few torrents over at JPOPSUKI but there were no seeds, alas. So all I have is Ikue Asazaki. :)

I don't know of any sites other for JPOPSUKI. You can try googling 'Enka mp3' and maybe see if you can come across any forums?

Ah, AIM? I don't give that out publicly, sorry. -_-; Oh no, I love jpop and other genres of japanese music and korean music and chinese and such. :)