I did a search and thought I found my answer here
http://www.liveatc.net/forum/about870.html&highlight=archiveshowever, it says the topic doesn't exist, but essentially I have the same question. Are all airports included or some? If only some are included, is there a way to get my airport included? Missoula is definitely not busy right now (winter), however things go nuts April-November or so, particularly because we have the largest aerial fire depot in the country here, so the traffic is great to listen to when a good fire season heats up. The other reason I wish it were included is because we've had two emergencies declared in the last two weeks that I'd like to be able to access, including one today involving a United flight with inop hydraulics and flaps. Great landing by the way in a 30 knot crosswind. Anyway, just curious what the criteria are to get included in the archives. If it's a bandwidth issue or use of resources, then I better make a donation to help keep the effort going. Appreciate the help.