Yes - how shall I send that? The files are shorts, so one is around 20MB.
Now that I think about it, maybe the mix of L R and 2 C channels is the problem for infuse, even though these files play great using XBMC on the same ATV.
Also more info via mediainfo on one of the problem audio tracks. :
Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : HE-AACv2 / HE-AAC / LC
Codec ID : 40
Duration : 12mn 37s
Bit rate mode : Variable
Bit rate : 40.0 Kbps
Maximum bit rate : 44.9 Kbps
Channel(s) : 2 channels / 1 channel / 1 channel
Channel positions : Front: L R / Front: C / Front: C