What is tracking ?
Tracking, also known under the terms audio tracking, digital tracking, soundtracking or soundtrack (not to be confused with music for movies) is a way of composing music on computer and console for video games then demos, born in the 1980s. These musicians use trackers (or soundtrackers), freewares in general and often open-source.
Basic tracking links :
Tracking history - The Karsten Obarski Tribute Project
Tracking history graphic project - Hellabs
Histoire du soundtrack (with famous modules to download)- Power of ASM
Historique : Le soundtrack (with famous modules to listen) - Nostalzik
List of module players and converters
Music theory ; The Zen of Tracking - Umlautllama
Music theory - 8notes