I have contacted open.fm support and this is what I've been told:

> Open.fm transmits in AAC+ (HE-AAC v2) @ 48 kbps
> 
> Most likely ST's decoder does not fully support the above format and
> only decodes the part which it understands.
> This [issue] is linked to so called AAC profiles - not all decoders
> support all parametric variations of such profiles and when it fails to
> recognise one or any combination of such parameters - it downgrades the
> stream decoding (in worst case from stereo to mono, but often times part
> of the spectrum is being cut off).
> 
> I don't know what decoder version (commercial, opensource) of AAC+ is
> used in ST but there are available versions of dfk-aac library that
> fully support HE-AAC v2 with wide range of params (bitrate, samplerate,
> channels, SBR, PS etc)... 
> If ST uses faad library it can lead to such problems.
> 

My next question would be if it is possible to somehow amalgamate
fdk-aac into LMS.


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