This software simultaneously displays instantaneous peaks, VU, PPM, CBS Technology Center loudness, and ITU BS.1770 loudness. All meters include peak-hold functionality that makes the peak indications of the meters easy to see.
The software accepts two-channel stereo inputs. The VU and PPM meters are split to indicate the left and right channels. The PPM meter also displays the instantaneous peak values of the L and R digital samples. ~ Hydrogen Audio
Source: ORBAN Loudness Meter
PeppyMeter is a software VU Meter written in Python. It was originally developed as the new ‘VU Meter’ screensaver for Peppy Player. With minor modifications it became a stand-alone application. PeppyMeter gets audio data from media players (e.g. mpd) via fifo and displays current volume level in a Graphical User Interface in the form of a traditional VU Meter.
Foobar2000 Playlist Viewers display the current playlist of songs. Different playlist viewers offer various capabilities such as formatting, grouping and visual options. A playlist viewer is usually the central window of a Foobar2000 interface.
A standalone analog VU meter for monitoring PC playback & recording levels.
The first tutorial is an overview; the second tutorial is a step-by-step guide on how to create graphic elements with Foobar2000’s drawing functions; and the third tutorial is a detailed presentation of CUI and PSS customization functions.
How to skin Foobar2000
Date and duration adjusted (DADA) auto-rating algorithm for foobar2000
The DADA Auto-Rating algorithm (DAR) automatically rates music according to a variety of statistics collected by foobar2000’s official “playback statistics” plugin.
If done well, an auto-rating algorithm will simply tell you what your favorite (and conversely, least favorite) music is, and the rating will be derived from and reflect actual listening behavior. This is quite different from manual ratings (e.g. 1 – 5 stars set by the user), since there’s very often a disparity between what we’d like ourselves to like, and what we actually like. For those interested in uncovering their actual musical tastes, a good auto-rating formula can be quite illuminating.
DADA Auto-Rating for foobar2000 – Giant Pygmy Audio