You can use the graph api to get the images in an album, like this:
https://graph.facebook.com/ALBUM_ID/photos
You get an array containing all the images in that album. The array contains objects like this:
"name": "hopes you're having a great weekend!",
"picture": "http://photos-d.ak.fbcdn.net/hphotos-ak-snc1/5370_127826373305_40796308305_2373079_2781005_s.jpg",
"source": "http://a4.sphotos.ak.fbcdn.net/hphotos-ak-snc1/5370_127826373305_40796308305_2373079_2781005_n.jpg",
"height": 604,
"width": 427,
"images": [
{
"height": 604,
"width": 427,
"source": "http://a4.sphotos.ak.fbcdn.net/hphotos-ak-snc1/5370_127826373305_40796308305_2373079_2781005_n.jpg"
},
{
"height": 254,
"width": 180,
"source": "http://photos-d.ak.fbcdn.net/hphotos-ak-snc1/5370_127826373305_40796308305_2373079_2781005_a.jpg"
},
{
"height": 130,
"width": 91,
"source": "http://photos-d.ak.fbcdn.net/hphotos-ak-snc1/5370_127826373305_40796308305_2373079_2781005_s.jpg"
},
{
"height": 106,
"width": 75,
"source": "http://photos-d.ak.fbcdn.net/hphotos-ak-snc1/5370_127826373305_40796308305_2373079_2781005_t.jpg"
}
],
This is an example from the api documentation. You can use these image links directly, facebook even gives you different sizes for the gallery. Good luck.
