[plt-scheme] Planet question

Hi all,

I downloaded 299.100 for OS X, installed the binary package, and  
thought "Hey! I'd like to try Neil's Levenshtein distance library.

In the "Textual, Mzscheme includes R5RS" (and Pretty Big) languages I  
get the response

planet: Could not find matching package in: (planet  
"levenshtein.ss" ("neil" "levenshtein.plt" 1 0))

which strikes me as odd---I assume the planet.plt-scheme.org page is  
auto-generated, and therefore accurately reflects what is in the  
Planet repository.

Is there hidden magic to use the Planet repository? I tried obtaining  
several other libraries, and I no Schemey Goodness emanated from the  
Planet server. No doubt, I've done something wrong.

As a suggestion, perhaps the Planet repository pages could also link  
to PLT files (if that is what underlies the mechanism) as well, so  
they could still be obtained even if the 'planet' download mechanism  
doesn't work (even if it is user error)?

Thanks,
Matt