Have been listening for some time to SBP feed, and ATIS is still on today, July 9.
I hear the controllers very quietly in the background, and it is not in the ATIS recording, so the tower and ground are still coming through, barely.
I sent them an note through the SBP tower website but have not heard a response.
http://sbptower.weebly.com/The change regarding the output mainly on the left was irritating to me too, especially when I listen to it on my iphone.
I am sure just some wires got crossed or something, and hopefully it will be fixed.