.4MP File Extension
File Type4-MP3 Database File
What is a 4MP file?
Database of audio files organized by 4-MP3, a database manager for storing and searching information on collections of sound files; supported formats include .MP3, .WAV, and .VQF; allows large collections of audio files to be searched and browsed efficiently.
4MP files do not contain actual audio, but only references to the audio files listed in the database.