Translating song lyrics is notoriously difficult as they tend to be full of idioms and it's very difficult to pin down a subject for any given sentence (if they even DO have complete sentences) as it is usually implied. I used to take songs along to my Japanese teacher for translation practice and she hated it.
subete de mo atte (全てでもあって)
"atte" is the TE-form of aru (to have). "subete" means everything and "~demo" is a suffix that roughly translate as "even". So it could be translated as "even having everything"
Hope this helps. I googled for a translation of the song, but found nothing, unfortunately.