Media Transfer Protocol (MTP) library

 libmtp is a library for communicating with MTP aware devices in POSIX
 compliant operating systems. It implements MTP Basic, the subset
 proposed for standardization.
 .
 The Media Transfer Protocol (commonly referred to as MTP) is a devised
 set of custom extensions to support the transfer of music files on
 USB digital audio players and movie files on USB portable media players.