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.

3g2

The 3G2 file type is a multimedia file, which is primarily associated with ‘3GPP2’. The 3rd Generation Partnership Project (3GPP) and 3rd Generation Partnership Project 2 (3GPP2) are considered the new standards for the creation, playback and delivery of multimedia over high-speed wireless networks (third generation). 3GPP and 3GPP2 seek to provide an uniform delivery of rich multimedia to the latest multimedia-enabled wireless devices. Both 3GPP and 3GPP2 are based on the MPEG-4 standard by Apple’s QuickTime.

far

The FAR file extension is a Farandoyle Tracker Music Module used by the software application with the same name.

ofr

An OFR file extension is an OptimFROG encoded audio file that is used by the similarly named OptimFROG by Florin Ghido. An OFR file is a losseless compressed audio format.

Mime-type: application/octet-stream

w64

The w64 file format is a Video editor Wave 64 file that was designed to overcome the 4 GB size limit of the WAV format.  It was developed by Sonic Foundry which sold its editor assets to Sony Corporation on July 31 in 2003.  Sony still maintains it.

Mime-type: application/octet-stream

 

aiff

The AIFF file format is related to the AIF file format, which is short for Audio Interchange File.

Mime type: audio/aiff, audio/x-aiff, sound/aiff, audio/rmf, audio/x-rmf, audio/x-pn-aiff, audio/x-gsm, audio/mid, audio/x-midi, audio/vnd.qcelp

med

The MED extension is a music file type used by A2B player by DigitalPhone.com. It uses a special compression technology for its data.

Mime type: application/x-att-a2bmusic-purchase

qcp

The QCP extension, which is related to the QCELP extension, is a PureVoice File by Qualcomm. There are converters that convert the audio files carrying the QCP extension to a WAV format.

Mime type: audio/x-gsm, audio/x-sd2, audio/vnd.qcelp, application/x-rtsp

caf

The CAF file format is a file type that is associated with the Class Action Gradebook Secondary/College edition by CalEd Software.

mp4

The MPEG-4 Part 14, or simply MP4, file extension is used for video files that are associated with the MPEG-4 format. It is used for the storage of audio and video storage but can also used to store subtitle data. It is related to the M4A (audio only) and M4P file formats and can be opened by most multimedia players on all platforms.

Mime type: video/mp4v-es, audio/mp4