Half-Life - Full Audio Remaster moddb.com/games/half-life/addons… I've been using this audio remaster, made by Senn, for the last few days and man, is it ever awesome... It uses the original audio but massively improves the quality, here is the description as per Senn: "Dedicated to faithfully remastering all the low quality sound effects and dialogue from Half-Life, Blue Shift and Opposing Force. Monsters. Machinery. Scientists. Your arsenal of weapons. Your footsteps—every sound manually cleaned and restored to full 16/44.1kHz quality." If you're using Xash3d then grabbing this is a no brainer IMO. Highly recommended for anyone and everyone.