Quelea - A note to those getting a message about VLC not being found after upgrading - note that if you've installed the 64 bit version of Quelea, then you'll need the
VLC 2.1.5 (64-bit) released for download - Neowin
Official download of VLC media player, the best Open Source player - VideoLAN
Download VLC Media Player 64-bit 3.0.12 for Windows - Filehippo.com