OMG I'm sorry, it seems I accidentally edited your comment instead of commenting myself??? I honestly DON'T know how that happened and I'm so perplexed. Anyway, I'll copy my reply to another comment.
"They're on the main page! Right above the Download button.
But basically, you're free to use it to develop games as much as you wish, either commercial or free, and on any engine. You're not allowed to resell, redistribute or otherwise try to repackage the assets though. (of course.)
If you have a particular need hopefully I can help you out!"
My apology for this mistake. The last thing I want is to impersonate someone else!