Audacious - OLD, PLEASE USE GITHUB DISCUSSIONS/ISSUES

Use "Add Files", select the folder (don't double-click), and click Add.

yes, this used to work like this, but I've just tried it in the new player...doesn't work anymore :(

Did you install the MP3 plugin?

i've downloaded the source files from the download page:
-audacious-3.5.tar.bz2 (430 KB)
-audacious-plugins-3.5.tar.bz2 (1.6 MB)
extracted, compiled and installed

i assume the mp3-plugin u mention is an input plugin, but no, the "mp3-plugin" isn't listed in any of the plugin pages...

must i download it seperately somewhere?

jm@sabayon-2 ~/workingdir/audacious/audacious-plugins-3.5/src $ ls
aac albumart asx bs2b compressor cue filewriter gnomeshortcuts ladspa Makefile modplug notify pulse_audio search-tool sndio statusicon vorbis xspf
aac-raw alsa asx3 cairo-spectrum console delete-files flacng gtkui lirc metronom mpg123 oss4 resample sid song_change stereo_plugin vtx
adplug amidi-plug audpl cdaudio-ng crossfade echo_plugin gio hotkey lyricwiki mixer mpris2 pls scrobbler2 skins sox-resampler tonegen wavpack
alarm aosd blur_scope cd-menu-items crystalizer ffaudio gl-spectrum jack m3u mms neon psf sdlout sndfile speed-pitch voice_removal xsf

When you run ./configure, it prints out a list of which plugins are going to be compiled and installed. You should have reviewed this list to make sure all the plugins you needed were there. Please post the output of:

$ cd audacious-plugins
$ grep -C10 "checking for MPG123" config.log

configure:8445: $? = 0
configure:8445: result: yes
configure:8445: checking for zlib.h
configure:8445: result: yes
configure:8491: checking for PULSE
configure:8498: $PKG_CONFIG --exists --print-errors "libpulse >= 0.9.5" 
configure:8501: $? = 0
configure:8515: $PKG_CONFIG --exists --print-errors "libpulse >= 0.9.5" 
configure:8518: $? = 0
configure:8562: result: yes
configure:8598: checking for MPG123
configure:8605: $PKG_CONFIG --exists --print-errors "libmpg123 >= 1.12" 
configure:8608: $? = 0
configure:8622: $PKG_CONFIG --exists --print-errors "libmpg123 >= 1.12" 
configure:8625: $? = 0
configure:8669: result: yes
configure:8693: checking for GDKX11
configure:8700: $PKG_CONFIG --exists --print-errors "gdk-x11-3.0" 
configure:8703: $? = 0
configure:8717: $PKG_CONFIG --exists --print-errors "gdk-x11-3.0" 
configure:8720: $? = 0

it shows me the following:

configure:8261: $? = 0
configure:8261: result: yes
configure:8261: checking for zlib.h
configure:8261: result: yes
configure:8307: checking for PULSE
configure:8314: $PKG_CONFIG --exists --print-errors "libpulse >= 0.9.5"
configure:8317: $? = 0
configure:8331: $PKG_CONFIG --exists --print-errors "libpulse >= 0.9.5"
configure:8334: $? = 0
configure:8378: result: yes
configure:8414: checking for MPG123
configure:8421: $PKG_CONFIG --exists --print-errors "libmpg123 >= 1.12"
Package libmpg123 was not found in the pkg-config search path.
Perhaps you should add the directory containing `libmpg123.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libmpg123' found
configure:8424: $? = 1
configure:8438: $PKG_CONFIG --exists --print-errors "libmpg123 >= 1.12"
Package libmpg123 was not found in the pkg-config search path.
Perhaps you should add the directory containing `libmpg123.pc'
to the PKG_CONFIG_PATH environment variable

what should i do next, libmpg123.pc is not in src/mpg123-folder only mpg123.c and Makefile

You need to install mpg123 (the library), otherwise the Audacious plugin will not be built. Some Linux distributions provide only a single mpg123 package; others split it into mpg123, libmpg123, and libmpg123-dev. If in doubt, try installing all three. Alternatively, you could use a Linux distribution that packages Audacious 3.5 already. I believe Arch and Debian are currently doing so, maybe others as well.

i installed:

╠ @@ Package: media-sound/mpg123-1.20.1 branch: 5, [sabayonlinux.org]
╠ Available: version: 1.20.1 ~ tag: NoTag ~ revision: 0
╠ Installed: version: Not installed ~ tag: n/a ~ revision: n/a
╠ Slot: 0
╠ Homepage: http://www.mpg123.org/
╠ Description: a realtime MPEG 1.0/2.0/2.5 audio
╠ player for layers 1, 2 and 3
╠ License: GPL-2 LGPL-2.1

recompiled+reinstalled the plugins > add dir functionality works now!

Many thanks for the support.