How to decrypt or get back encrypted files infected by known encrypting ransomware viruses. - wintips.org - Windows Tips & How-tos
MP3 Sponge - hide your message in a MP3 file - MP3 Sponge is an easy encryption and decryption freeware. Using this tool, you can insert (encrypt) your message into a MP3
Decrypt and remove Teslacrypt 3.0 .mp3 files - Sureshot Software