Fix Playlist Operation.

Ver1.2

• win-x64-installer-v1.2.zip for Windows-x64 Installer.
• linux-x64-v1.2.tar.gz for Linux-x64 Binary files.
• linux-arm-v1.2.tar.gz for Raspberry-Pi Binary files.
• osx-x64-v1.2.zip for OSX Binary files.
• win-x64-v1.2.zip for Windows-x64 Binary files.