I need a theme song...

Okay... I've decided to begin a search for a theme song for me or The Nick Team, or each individual character of The Nick Team. However, running a search for J-Pop didn't really find any clips to listen to. I'm thinking of having J-Pop as my genre, but I can't FIND ANY! WTF?! Well, I got a suggestion of using the music from DBZ Budokai 2, but I only have 1 and 3. Geez, that's so ironic. Anyone who knows a site where I can listen to J-Pop clips for free and without download, well, COMMENT!!!!!