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PulseAudio emulation for ALSA.

The program provides an alternative partial implementation of the PulseAudio
API. It consists of a loader script and a number of shared libraries with the
same names as from original PulseAudio, so applications could dynamically load
them and think they are talking to PulseAudio. Internally, no separate sound
mixing daemon is used. Instead, apulse relies on ALSA's dmix, dsnoop, and plug
plugins to handle multiple sound sources and capture streams running at the same
time. dmix plugin muxes multiple playback streams; dsnoop plugin allow multiple
applications to capture from a single microphone; and plug plugin transparently
converts audio between various sample formats, sample rates and channel numbers.
For more than a decade now, ALSA comes with these plugins enabled and configured
by default. Cmake is required to build it.

Note: It's recommended to uninstall PulseAudio before install apulse.