Spotify Soloist plays only through PulseAudio or PipeWire, and AGNOS ships PulseAudio's client library without a server. This directory is the minimal server needed to carry Soloist's audio to one output: the pulseaudio daemon, pactl (to switch between the speaker and the silent sink without restarting Soloist), their private libraries, and four modules (native protocol, ALSA sink for BlueALSA, null sink, and the real-time pipe sink used for Android Auto).

Source: Ubuntu 24.04 (noble) arm64 binary packages, pulseaudio and pulseaudio-utils 1:16.1+dfsg1-2ubuntu10.1, and the libraries listed in PACKAGES.sha512 (SHA-512 of each .deb as published by Ubuntu).
The comma's own libpulse0/libpulsecommon-16.1.so is byte-identical to that Ubuntu build, which is why only these files are needed. Regenerate with ./update.sh; SHA256SUMS lists the extracted files.
Licenses: PulseAudio and libltdl are LGPL-2.1-or-later, libtdb LGPL-3.0-or-later, libsoxr LGPL-2.1-or-later, liborc and speexdsp BSD-style. Full notices are in licenses/. Corresponding source is available from Ubuntu's archive (apt-get source pulseaudio=1:16.1+dfsg1-2ubuntu10.1, and likewise for each package above). The libraries are unmodified and dynamically linked.