After much trial and error, I finally found that this script for Tag>Filename works just fine with every album I threw at it:
$trim($left(%albumartist%,40)) $trim($left(%album%,40))\$num(%discnumber%,1) $num(%track%,2) $trim($left(%title%,40))
And I've finally converted my whole collection this way, which should make things easier. And yes, I decided on titles for the tracks, just to make it friendlier for Folder Mode in media players.
Thanks for the info!