Miles Sound System

Miles Sound System (MSS), formerly known as Audio Interface Library (AIL), is a sound software system primarily for video games and used mostly as an alternative for low-end audio chipsets. It uses little CPU time while providing adequate audio output. It was originally a middleware driver library for soundcards to use in DOS applications when no viable alternative was available. Epic Games Tools (formerly RAD Game Tools) acquired the technology from Miles Design in 1995.

Miles Sound System

Original author(s)	John Miles
Developer(s)	Epic Games Tools
Initial release	1991; 34 years ago (1991)
Stable release	10.0.62.0 / March 4, 2022; 3 years ago (2022-03-04)[1]
Operating system	DOS, Windows, Linux, Classic Mac OS, macOS, Xbox, Xbox 360, Xbox One, PlayStation 2, PlayStation 3, PlayStation 4, PlayStation Portable, PlayStation Vita, Wii, Wii U, Nintendo Switch, Nintendo 3DS, Android, iOS, Windows Phone[1]
Type	Application programming interface (API)
Website	www.radgametools.com/miles.htm

The 1992 AIL version 2 for DOS has been released by John Miles as open-source (public domain without restrictions) in 2000.^[2][3] The package can be found on his personal site (KE5FX.com) and contains source code for both real-mode and protected-mode programs.

Reception

The Miles Sound System was used in its history by over 7,000 video games across 18 platforms, with customers including Sony, Capcom, Epic, and Microsoft.^[4][5] Computer Gaming World stated in 1994 that "Many of the game publishers have decided to support only those sound cards which are supported by the Miles drivers", especially the Sound Blaster.^[6]