[fritsch]

ffprobe version n3.1-12-g67171c3-VERSION=3.0.1-Krypton-alpha Copyright © 2007-2016 the FFmpeg developers
built with gcc 5.3.1 (Ubuntu 5.3.1-14ubuntu2.1) 20160413
configuration: --prefix=/opt/ffmpeg --extra-version='VERSION=3.0.1-Krypton-alpha' --disable-devices --enable-ffplay --disable-ffmpeg --disable-ffserver --disable-doc --enable-gpl --enable-runtime-cpudetect --enable-postproc --enable-vaapi --enable-vdpau --enable-bzlib --enable-gnutls --enable-muxer=spdif --enable-muxer=adts --enable-muxer=asf --enable-muxer=ipod --enable-encoder=ac3 --enable-encoder=aac --enable-encoder=wmav2 --enable-protocol=http --enable-libvorbis --enable-muxer=ogg --enable-encoder=libvorbis --enable-nonfree --enable-pthreads --enable-zlib --enable-encoder=png --enable-encoder=mjpeg --disable-mipsdsp --disable-mipsdspr2 --enable-nonfree
libavutil 55. 28.100 / 55. 28.100
libavcodec 57. 48.101 / 57. 48.101
libavformat 57. 41.100 / 57. 41.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 47.100 / 6. 47.100
libswscale 4. 1.100 / 4. 1.100
libswresample 2. 1.100 / 2. 1.100
libpostproc 54. 0.100 / 54. 0.100
Input #0, flac, from '20 - (They long to be) close to you.flac':
Metadata:
ALBUM ARTIST : Carpenters
PUBLISHER : A&M
COMPOSER : Karen Carpenter
TITLE : (They Long to Be) Close to You (5.1 mix)
RELEASECOUNTRY : US
TOTALDISCS : 2
LABEL : A&M Records
TOTALTRACKS : 21
MUSICBRAINZ_ALBUMARTISTID: 4580d83b-093e-4241-91fb-2dd71f5f1f3f
DATE : 2005-01-11
disc : 2
TRACKTOTAL : 21
MUSICBRAINZ_RELEASETRACKID: d763e107-6198-4651-8353-b4fec1c5459e
ASIN : B00067Z2VY
ALBUMARTISTSORT : Carpenters
ORIGINALDATE : 1999
SCRIPT : Latn
MUSICBRAINZ_ALBUMID: de1dde00-f745-432c-9a1f-a0fca2a862ae
RELEASESTATUS : official
album_artist : Carpenters
CATALOGNUMBER : B0002996-36
ALBUM : Singles 1969-1981
MUSICBRAINZ_ARTISTID: 4580d83b-093e-4241-91fb-2dd71f5f1f3f
MEDIA : Hybrid SACD
RELEASETYPE : album;compilation
ORIGINALYEAR : 1999
ARTIST : Carpenters
MUSICBRAINZ_RELEASEGROUPID: 8e667fb5-c32f-356f-b38e-ec06db32f522
DISCTOTAL : 2
BARCODE : 602498630624
MUSICBRAINZ_TRACKID: 1ab22e50-3cc9-43f0-9d69-40123d6e3598
ARTISTSORT : Carpenters
ARTISTS : Carpenters
track : 20
DISCSUBTITLE : 5.1 mixes
Duration: 00:03:43.00, start: 0.000000, bitrate: 1264 kb/s
Stream #0:0: Audio: flac, 44100 Hz, stereo, s16
Stream #0:1: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 500x494 [SAR 1:1 DAR 250:247], 90k tbr, 90k tbn, 90k tbc
Metadata:
comment : Cover (front)

See: ffmpeg detects 44.1 khz stereo s16 - it has no idea about that being DTS - so if your AVR "likes" it it works. The moment Audio Engine uses 32 bit format for it -> forget it.