Need help with command switches for AAC internet stream

[Alcyone]

I'm running a private internet audio stream and I'm trying to use something other than MP3 due to it's poor sound quality. Here's what I have:
- XXXXX is the port number I'm using which I didn't want to post for security reasons.

--playlist-enqueue --random --loop "C:\Downloads" --sout=#transcode{vcodec=none,acodec=mp3,ab=192,channels=2,samplerate=44100}:http{mux=mp3,dst=:XXXXX/} :sout-keep

This works on windows and IOS

I tried the following, which works on Windows, but not IOS:

--playlist-enqueue --random --loop "C:\Downloads" --sout=#transcode{vcodec=none,acodec=vorb,ab=192,channels=2,samplerate=44100}:http{mux=ogg,dst=:XXXXX/} :sout-keep

I would like to use an AAC stream or something that's more efficient than MP3 and works across IOS and windows. Just wondering if someone can provide assistance as I've been looking through the codec options and mux options and coming up short.

Thanks