Audacious - OLD, PLEASE USE GITHUB DISCUSSIONS/ISSUES

I'm using audacious 3.5.x built from git on Debian sid. It will not play opus, even though my ffmpeg (2.1.1) is built with opus support. When I attempt to play an opus file, I get:
ffaudio: Unknown format for file:///sample.opus

mpv player (built using the same ffmpeg) will play opus files correctly.

Here is info on my file and ffmpeg build. If you need more info or think the issue lies elsewhere, let me know. Thanks.

$ mediainfo sample.opus
General
Complete name : sample.opus
Format : OGG
File size : 11.7 KiB
Duration : 1s 414ms
Overall bit rate : 67.6 Kbps
Writing application : opusenc from opus-tools 0.1.8
Audio
ID : 557313220 (0x2137ECC4)
Format : Opus
Duration : 1s 414ms
Channel count : 1 channel
Channel positions : Front: C
Sampling rate : 48.0 KHz
Compression mode : Lossy
Writing library : libopus 1.1

ffmpeg version 2.1.1 Copyright (c) 2000-2013 the FFmpeg developers
built on Dec 27 2013 14:31:27 with gcc 4.8 (Debian 4.8.2-10)
configuration: --prefix=/usr --extra-cflags='-g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security ' --extra-ldflags='-Wl,-z,relro' --cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-nonfree --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-libvpx --enable-libschroedinger --disable-encoder=libschroedinger --enable-version3 --enable-libopenjpeg --enable-librtmp --enable-avfilter --enable-libfreetype --enable-libvo-aacenc --disable-decoder=amrnb --enable-libvo-amrwbenc --enable-libaacplus --libdir=/usr/lib/x86_64-linux-gnu --disable-vda --enable-libbluray --enable-libcdio --enable-gnutls --enable-frei0r --enable-openssl --enable-libass --enable-libopus --enable-fontconfig --enable-libpulse --disable-mips32r2 --disable-mipsdspr1 --disable-mipsdspr2 --enable-libvidstab --enable-libzvbi --enable-avresample --enable-libiec61883 --enable-libfdk-aac --enable-vaapi --enable-libdc1394 --disable-altivec --disable-armv5te --disable-armv6 --disable-vis --shlibdir=/usr/lib/x86_64-linux-gnu
libavutil 52. 48.101 / 52. 48.101
libavcodec 55. 39.101 / 55. 39.101
libavformat 55. 19.104 / 55. 19.104
libavdevice 55. 5.100 / 55. 5.100
libavfilter 3. 90.100 / 3. 90.100
libavresample 1. 1. 0 / 1. 1. 0
libswscale 2. 5.101 / 2. 5.101
libswresample 0. 17.104 / 0. 17.104
libpostproc 52. 3.100 / 52. 3.100
DEA.L. opus Opus (Opus Interactive Audio Codec) (decoders: libopus ) (encoders: libopus )