Of course, Windows users are pretty screwed.
Both of these things you can do with the built in AirPlay support in 10.8+
Typical use case for me using Airfoil: Send Spotify output to an AppleTV, and a couple Airport Express devices, while all other apps send their output to my Mac's speakers.
F you Apple. Nobody has cracked the open streaming audio nut, trivial as it may be. And the rest are left with junk, proprietary crap like this.
Consider that AppleTV 6.0 now allows "AirPlay via iCloud", which means you can stream tracks you own on someone else's AppleTV where you haven't registered your iTunes account. Such a change might be one of the reasons for FairPlay encryption.
This might be a temporary issue where they open it up if enough people complain.
Well, RogueAmoeba wares was always a bunch of semi-legal stuff, utilizing kernel hacks, private APIs and such.
Maybe it should be looked at on a per-app basis. or company. Apple should have relationships with these very talented software shops. They should of course not support anything that would cause harm. In my wildest dreams, right?
Ummmmm, I'm going to call BS on that. If What RA was doing was illegal Apple would have shut it down ASAP - especially if it was with regard to using some undocumented features of the core OS that Apple wanted to protect. We're talking about streaming audio here - locally on your network (yes, there is the possibility of routing this across networks but if you're going through that much trouble you can implement a homegrown system much more reliably).
I find it interesting people go to bat for Apple when Apple screws over devs that makes a great product - and obviously are fans of Apple, and no, nothing RA was selling was illegal, that's just unfounded FUD. I've asked RA repeatedly to just build an interoperable product that has it's own streaming components that runs this way on Linux. At the time they said they had no plans - I really hope Apple pushes these guys over the edge to build products that can bridge the OS gap. Apple won't ever do anything along those lines.