Okay, so I've REALLY been getting into the Shugo Chara anime. I already have "Kokoro no Tamago" (first opening), "Honto no Jibun" (first ending), and "Minna Daisuki" (second opening), but I cannot find the other three ending songs ANYWHERE!!! Believe me, I've looked!

So, if anyone could point me towards "Renai Rider" (second ending) "Kiss! Kiss! Kiss!" (third ending), and "Gachinko de Ikou" (fourth ending), I'd really appreciate it.

Arigatou!

恋愛♥ライダー
http://rapidshare.com/files/133727955/shugo_chara_-_renai_rider.mp3.html

Kiss! Kiss! Kiss!
http://rapidshare.com/files/133727954/shugo_chara_-_kiss_kiss_kiss.mp3.html

Dug them up on 4chan's /rs/. They're all I could find besides what you already stated as having and the Utau Hoshina character CD.
I also have "Black Diamond" in both MP3 and FLAC format.
And that's all I can provide for now.

どういたしまして,
helozx (fellow new-found "Shugo Chara!" fan)