Mac Desktop. And I've tried their "community", and it totally blows. I posted a question there a week ago and it's still being reviewed, and hasn't even gone live yet.
Actually, I found that the installation and use of MAMP has been by far the easiest of any stack on Windows, Mac OSX, or Linux to install. Just for a bit of balance.
Not knowing how you have installed these things makes it difficult though to say your experience of it is wrong though...
I too am on Lion and ver 2.0.5 of MAMP.
Only the first one is about MAMP though lol. The others are about Joomla.
Actually not necessarily, if there is an issue with the server installation, these issues may be directly related.
I do not see, nor would I expect to see, a list of the files in the way you have described. That usually only occurs when there has been an issue with the installation as far as my experience goes. I simply use the Finder to navigate to the htdocs/ directory as usual.
It would seem that, for whatever reason, the installation of MAMP has not gone as intended, and you should consider re-installation of the same, following the advice from the MAMP site to the letter.