Source code:
The source is available on Launchpad.

GUI and script for PulseAudio users that will set up system-wide equalized audio, without needing to restart PulseAudio or any running applications.

Advantages:

• Configurable 15 band equalizer for PulseAudio;
• You can enable or disable equalized audio on-the-fly, without having to restart any running applications;
• Offers the choice of using equalized audio for the current session or permanently;
• No need to edit any configuration files by hand;
• User-customizable: you can use any LADSPA audio processing plugin (which can apply various audio effects beyond equalization);
• Packaged as a .deb file for easy installation;
• Graphical User Interface.

Usage:
Open the PulseAudio Equalizer (Applications -> Sound & Video). The interface should be fairly self-explanatory:

• 15 frequency bands you can adjust to your liking;
• Preamp will boost your equalized volume (as a multiplier value from 1x to 4x);
• Presets are included (based on VLC’s built-in equalizer), or you can choose to save own favourite configuration as a new preset;
• EQ Enabled will enable the equalizer in the current session (which applies to all running applications);
• Keep Settings will configure your PulseAudio configuration to remain permanently equalized (and therefore, you won’t need to run the PulseAudio Equalizer interface each time you login);
• Advanced menu options so that you can reset all settings (useful for troubleshooting) or delete user presets;
• Apply Settings will apply all changes.

If you already use fl:2-devel repo for your Foresight, just open terminal and write:

sudo conary update pulseaudio-equalizer

If you use fl:2-qa or fl:2 repo, then write instead:

sudo conary update {pulseaudio-equalizer,ladspa-swh-plugins}=@fl:2-devel

Any problems with pulseaudio-equalizer, plz fill an issue at: https://issues.foresightlinux.org

If its pulseaudio-equalizer itself that may be busted, look in this thread.