How can I make the tables/thumbnails be aligned the same way the thumbnails are aligned in thumbnails.php...
I don't understand the question. Please post more details. A link or a screenshot might be helpfull.
GauGau
Getting the thumbnails of the main index:
(https://coppermine-gallery.com/forum/proxy.php?request=http%3A%2F%2Fwww.destinationundefined.com%2Fimgal%2Falbums%2Fuserpics%2F10001%2Falign2.jpg&hash=059a5a43148ec690f47cd901891939e545dd3908)
To align like the thumbnails in thumbnails.php:
(https://coppermine-gallery.com/forum/proxy.php?request=http%3A%2F%2Fwww.destinationundefined.com%2Fimgal%2Falbums%2Fuserpics%2F10001%2Falign1.jpg&hash=cc7e41ad7cfe750d8a20845e5ae08fccfae98cc9)
you can specify the number of albums in one row and the number of thumbnails in one row in coppermine config. Set both values so they match and you should be fine. The drawback is when in admin view there's little space left for the admin buttons nex to the album thumbnails.
GauGau
In what file are the tables created for the album list in index.php. I'm going to just make it have one column but center everything.
It's in themes/yourtheme/theme.php.