Hi,
seems you need to download keyfile manually to work with.Only problem I see is that its a livestream and you need to update the playlist anyhow.So its working with ffmpeg on that way a little.Only just playing the ts links which are present.
Best would be if the people of LS could add another paramters to ignore keyfile link in playlist file and to set it extra to read it from other source.
PS: Keyfile you can read from seelive.me.
greetz