Yes, we decommissioned the the old HLS infra last week.
As far as the archive stream server goes, at about 10 minutes past each hour, the whole of the previous hour will be available. (When the hour turns green here, you can listen to it.)
Our player may restrict things a bit more than that. I’d have to carefully read the code to know for sure. But if you use a different player then this won’t matter.
More detail than you asked for
There is, however, a limit in this feature at present. We are using VOD (video on demand) HLS playlists, which have an explicit end…
VOD playlists aren’t supposed to change over time, i.e. no adding segments to the stream as new program material becomes available, and players fetch the playlist only once. So if at 9:15 AM you request the 8:00 AM playlist, we create a one-hour long stream that will end at 9:00 AM. You have to start the player again.
I experimented with #EXT-X-PLAYLIST-TYPE:EVENT but ran into the problem that players generally start playing the stream at the end of the playlist instead of the beginning. The server cannot control that and we will need to fix it in the players. I haven’t gotten around to it. For now this isn’t top priority although I very much want to do it.
If anyone wants to use EVENT playlists in their player, I can provide them.