xa

XA or Extensive Audio is an audio file type which is primarily associated with The Sims ( a popular game now owned by Electronic Arts formerly by Maxis). It is also used in other games like Sim City. Note: Different versions of this file type may have different starting strings.

dsm

The DSM format, short for Delphi Symbol Module, is a file type used in the Delphi software from developer Borland Software Corporation.

mt2

File extension: MT2 File type: Ver. 2.0 Module/Song . The MT2 file type is primarily associated with ‘MadTracker’ by Yannick Delwiche. MadTracker is a composition tool based on the tracker concept. Primary association: MadTracker Company: Yannick Delwiche Identifying characters Hex: 4D 54 32 30 , ASCII: MT20

umx

The UMX file contains background music for a first-person shooter called Unreal Tournament. It is similar to XM and S3M and can be opened with various audio players and Unreal Utilities.

act

The ACT is a file type that is associated with the ‘ADPCM Compressed files’ that are recorded by some MP3 players or voice recorders. ADPCM, short for Adaptive Differential Pulse Code Modulation, is a waveform codec that quantizes the difference between a speech signal and a prediction of a speech signal, instead of quantizing the speech signal directly.

m4a

A M4A format, short for MPEG-4 Audio, is an audio layer file that is the audio layer of MPEG-4 movies. It is ready to become the world’s new standard for the compression of audio files. The M4A format is also used by Apple as a lossless file or lossless encoder.

pls

A PLS file is a Generic Playlist file that is used by different software applications as a playlist for audio tracks. Besides this common use of the PLS file type, it can also be used for OGG Vorbis files. For this alternative use of the PLS file extension, please refer to the various sources on the internet that explain the process on how to do this.

Mime type: audio/x-scpls

asf

The ASF file format, short for Advanced Streaming Format, is an open file format by the Microsoft Corporation for the streaming of files that contain text, audio, video, animation and graphics. Since it doesn’t define what format is within the file, it rather is a standardized, extensible container that is not dependend on a specific operating system or protocol. It consists for three objects: a header, a data object and an optional index object that can help with the access to the data within the file. Because of it’s non-dependent form and the open file format, the ASF file is used by a number of programs such as Ashampoo Media Player, VideoFile, Cliprex Video, IrfanView, MMJB, SlowView, Ultraplayer and Winamp.

Mime type: audio/asf, application/asx, video/x-ms-asf-plugin, application/x-mplayer2, video/x-ms-asf, application/vnd.ms-asf, video/x-ms-asf-plugin, video/x-ms-wm, video/x-ms-wmx

mp1

The MP1 file extenstion is a MPEG Audo stream, layer 1. While most media players still accept this format, its codec is outdated and is replaced by MP2 and the common MP3.

rm

The RM file format is used by RealMedia. This is a multimedia player created by RealNetworks Inc. It is used by both RealVideo and RealAudo and is popular for streaming video and audio over the internet.

Mime type: application/vnd.rn-realmedia, audio/vnd.rn-realaudio, audio/x-pn-realaudio, audio/x-realaudio, audio/x-pm-realaudio-plugin