They don't have standard naming conventions... they usually name the files with the topic and/or speaker. They don't upload on a regular schedule, either. Some of them don't upload until it's too late. (We air an old backup program for that day.)
There aren't a LOT of these, but enough to be annoying. Essentially, you need a human to read/interpret what's there, select the relevant things, then download them.
We use 44.1K files here, because that's the CD standard. Since roughly 1/2 of our broadcast is music, it makes sense to be consistent with that standard.