Download location (HTTP): Download location (FTP): Version used: &libao-version; Package size: &libao-size; Estimated Disk space required: &libao-buildsize; The libao package contains a cross-platform audio library. This is useful to output audio on a wide variety of platforms. It currently supports WAV files, OSS (Open Sound System), ESD (Enlighten Sound Daemon) and ALSA (Advanced Linux Sound Architecture).