File extension Details of M4P, MSV, MT2, M4B, MTS, MTI, MED, MTP, MTM

Name:	M4P
File Type:	iTunes Music Store Audio File
Popularity:	3
Category:	audio
File Description:	Protected .AAC audio file downloaded from the iTunes Music Store; incorporates Apple Computer's "Fairplay" DRM copy protection, which limits the number of computers the file can be played on. In order to play a protected M4P file, you must authorize your computer using Apple iTunes; this is done by entering a username and password for the account that downloaded the file; up to five computers can be authorized with the same account.
Open Programs:	Mac OS Apple iTunes or QuickTime Player Windows Apple iTunes or QuickTime Player

Name:	MSV
File Type:	Memory Stick Voice File
Popularity:	2
Category:	audio
File Description:	Compressed audio file format used by Sony's Memory Stick IC recorders, such as the ICD-MS1 and ICD-MS515; similar to a Sony Digital Voice (.DVF) file, but not as common; can be opened with Sony's Digital Voice Player.
Open Programs:	Windows Sony Digital Voice Player Sony Digital Voice Editor Microsoft Windows Media Player with Sony Player plugin

Name:	MT2
File Type:	MadTracker 2 Module
Popularity:	2
Category:	audio
File Description:	Audio module format used by the MadTracker 2 tracking program.
Open Programs:	Windows MadTracker 2 Winamp with the MadTracker Player plugin

Name:	M4B
File Type:	MPEG-4 Audio Book File
Popularity:	4
Category:	audio
File Description:	Audiobook file based on the MPEG-4 container format; typically compressed with .AAC encoding; nearly identical to an .M4A file, but denoted as an audiobook and can be "bookmarked" by supporting audio players. The M4B extension is used by audiobooks downloaded from the Apple iTunes store; iTunes audiobooks are copy-protected using Apple's FairPlay DRM and can only be played on authorized computers or iPods.
Open Programs:	Mac OS Apple iTunes Microsoft Windows Media Player VideoLAN VLC media player Windows Apple iTunes Microsoft Windows Media Player VideoLAN VLC media player Linux VideoLAN VLC media player

Name:	MTS
File Type:	MadTracker 2 Sample File
Popularity:	3
Category:	audio
File Description:	Sample format used by the MadTracker 2 audio tracking program; contains an audio sample of an instrument, voice, or other sound; assigned to an audio track and may played back at different pitches that correspond to notes in the score.
Open Programs:	Windows MadTracker

Name:	MTI
File Type:	MadTracker Instrument
Popularity:	3
Category:	audio
File Description:	Instrument format used by the MadTracker tracking program; played back within the tracker using MIDI data.
Open Programs:	Windows MadTracker FMJ-Software Awave Studio

Name:	MED
File Type:	Amiga MED Sound File   (Most common)
Popularity:	3
Category:	audio
File Description:	Sound tracker module created by Amiga OctaMED tracking program
Open Programs:	Mac OS SoundApp Windows ModPlug Player

Name:	MTP
File Type:	MadTracker 2 Pattern
Popularity:	3
Category:	audio
File Description:	Contains a song pattern playable by the MadTracker 2 audio tracking program
Open Programs:	Windows MadTracker

Name:	MTM
File Type:	MultiTracker Module
Popularity:	3
Category:	audio
File Description:	Universal audio tracker module format that is similar to a .MOD file; contains sound samples and a musical score for playback; supports up to 32 channels, which allows many samples to be played back at once.
Open Programs:	Mac OS CocoModX XimpleMOD Windows Nullsoft Winamp JetAudio MODPlug Player VUPlayer XMPlay

Name:	MUS
File Type:	Finale Notation File Format   (Most common)
Popularity:	3
Category:	audio
File Description:	Music notation format used by Finale and other MakeMusic notation programs; saves data in MIDI format, similar to a .MID file; also contains additional information that can only be read by MakeMusic software. MUS files contain music notation information, but do not store actual audio data.
Open Programs:	Mac OS MakeMusic Finale MakeMusic Finale Allegro MakeMusic Finale PrintMusic MakeMusic Finale SongWriter MakeMusic SmartMusic Windows MakeMusic Finale MakeMusic Finale Allegro MakeMusic Finale PrintMusic MakeMusic Finale SongWriter MakeMusic SmartMusic