The tooltip function need to be executed after all images are loaded by fbAlbum, so inside the callback function.
What I did on jsfiddle: http://jsfiddle.net/79RVw/3/ is to create a function doTooltip and then I call doTooltip() inside the callback.
function doTooltip() {
$("[rel=tooltip]").tooltip({
delay:{show: 300, hide: 150},
placement: 'bottom'
});
}
$('#fbAlbumI').fbAlbum({
'albumID':'10150302289698306',
'rel':'tooltip',
'callback': function(){ //code that loads after the album must go here
doTooltip();
$(".album a").magnificPopup({type: 'image' });
}
});