(As an aside, I'm somewhat disturbed by the way things published by Avex have suddenly come to dominate my CD collection. I seem to recall that a year ago I wasn't even really that familiar with the label. Now, it seems to be everywhere. My bank account would like to blame it all on Initial D (my bank account hating Initial D passionately, and mourning the day I ever encountered the series). But really, much of it is completely unrelated. Which makes it all the more odd.)
For the bored, the channel I'm listening to is Vivamusic Jpop. I found it by doing a search for "J-pop" in the Windows Media Player's Radio option.