oandbackup - Make backups of selected apps on your device and restore from those backups.
VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
Super Backup & Restore - Super Backup & Restore app allows users to backup all their stuff such as pictures, videos, apps, text messages, contacts, call history, and calendar data, etc.
AIMP - AIMP : Free Audio Player : Официальный сайт программы
SyncDroid - SyncDroid is basically and iOS and Android smartphone manager that lets the users of both smartphones to transfer their mobile content from one smartphone to another within few simple steps.
foobar2000 - An advanced freeware audio player for the Windows platform.