I was just looking back over the old manual and realized that it lists an alternate, "older" wireless format "1XRTT" that I don't recall ever hearing about (wikipedia has bupkiss on it).
I also note that the thing was supposed to take Audible.com (.AA) files natively. It also lists AZW (Amazon Whispernet, maybe?), PRC, MOBI, MP3 and TXT -- no RTF, interestingly, and I don't know, and rather doubt, if that PRC is anything other than MOBI.
Then there's still the issue of how much has the thing changed in it's year of seclusion?
