I'll be honest, I personally do not like Martha Stewart. I don't know her personally, but that video made me cringe. I think that was way too many reptiles for such a small cage and I hate aspen for high humidity creatures. It sucks the moisture out of the air.

Back on subject though, OP I don't know much about frogs, but as a person who has kept many many different species of animals, I can say that mixing is a very tough and dangerous past time. In most cases, even having a group of the same species could be a royal pain. I'm not just talking reptiles or amphibians either. I have three cats and it's a constant battle to keep the peace. Same goes for my dog with other dogs. Fish are the same way (though more commonly kept in mixed groups). If you don't carefully plan, you are about 99% likely to fail. If you do plan, you are about 80% likely to fail. Always be prepared to make emergency arrangements and always assume you'll come home to a dead, dying, or injured animal. If all animals in a mixed group are fine, then you've had a lucky day. I'm not saying that chances are the animals will hurt each other, just that you should assume they will. A successful mixed group of animals is a science and an art. Even highly experienced keepers will have trouble at one time or another.