Request: add DSF and DFF to the supported MIME types

[storaid]

Hello,
Please add DSF and DFF to the supported MIME types to allow 3rd-party apps to play DSD format files directly.
Why has DSF and DFF MIME support not been provided until now?
I don’t quite understand why.
Currently, only the WiiM app can play DSF and DFF format DSD files.

It seems like on-the-fly transcoding, but I’m unsure, as the retrieved metadata looks strange.
[GetPositionInfoResponse]

<?xml version="1.0"?>
<DIDL-Lite
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns:upnp="urn:schemas-upnp-org:metadata-1-0/upnp/"
xmlns:song="www.wiimu.com/song/"
xmlns="urn:schemas-upnp-org:metadata-1-0/DIDL-Lite/">
<upnp:class>object.item.audioItem.musicTrack</upnp:class>
<item>
<song:id>0</song:id>
<song:singerid>0</song:singerid>
<song:albumid>0</song:albumid>
<res protocolInfo="http-get:*:audio/mpegLNA.ORG_PN=MP3;DLNA.ORG_OP=01;" duration="00:05:06">http://10.1.1.127:50002/m/NDLNA/69463.dff</res>
<dc:title>10. éºããä¸ç</dc:title>
<upnp:creator>-[Hi-Res]うたわれるもの 偽りの仮面 & 二人の白皇 歌集 (DSD 2.8MHz/1bit)</upnp:creator>
<upnp:album>[Hi-Res]うたわれるもの 偽りの仮面 & 二人の白皇 歌集 (DSD 2.8MHz/1bit)</upnp:album>
<upnp:albumArtURI>http://10.1.1.127:50002/transcoder/jpegtnscaler.cgi/folderart/69463.jpg</upnp:albumArtURI>
<upnp:artist>Suara</upnp:artist>
<song:rate_hz>192000</song:rate_hz>
<song:format_s>32</song:format_s>
<song:bitrate>5654</song:bitrate>
</item>
</DIDL-Lite>

From the content above, this is not a valid DIDL-Lite metadata format.