iPeng and Playback on MacOS—stream problem

Anyone running iPeng on MacOS and using its Playback facility?

M1 Macs will run some iOS apps, like iPeng, and iPeng's Playback option turns iPeng into an LMS player.

Certainly iPeng runs on my MacBook Air M1 and delivers Playback, but I have a problem with it crashing when I try to play certain radio streams.

I should add that I can play any and every one of these streams perfectly well using iPeng with Playback on iOS devices, like my iPhone or iPad. It’s only when I try Playback on the Mac that I hit the problem.

I’ve tried to find common factors among the relevant streams, and quality seems to be one.

All the 44.1 kHz streams play perfectly (for example Europa Jazz).

The 48 kHz streams do not play (for example D-Dur Classical), nor does a 96 kHz one (Mother Earth). They do not play and they crash iPeng.

The codec does not seem to be a factor—some OGG streams play (for example Juke), some do not (for example CRo Jazz); some AAC streams play (for example Jazz24), some do not (Classic Jazz Radio).

I’m connecting the laptop to LMS via wifi, so in iPeng Playback’s player prefs I have bitrate limiting for wifi set to off. I can’t see any other prefs that might affect the problem.

On the laptop, in Audio MIDI Setup I have my headphone output set to 96kHz 2ch 32-bit Float, which is the highest possible. I’ve tried it at the other options, 44.1, 48, and 88.2, and that seems to make no difference.

I have the sense that I’m missing something obvious. I really want to use iPeng like this on my laptop with headphones for all my radio streams, which I have collected as Favourites sourced from the excellent Radio Now Playing app.

Any ideas?