It's been a while since ever popular VLC has seen a major update, and today's debut of version 2.1 -- also known as "Rincewind" -- packs a handful of features that are sure to please. Most notably, VLC for both Windows and OS X is now 4K-compatible, but VideoLAN didn't stop there. Also included in the upgrade are improved support for a variety of file types including MKV, AVI and MP4, as well as a beefed up audio core designed to boost performance and fidelity. OS X users will notice adjustments to the player's UI, including a customizable playback menu and the ability to play video as a desktop background. For those of you interested in porting to Android, iOS or Windows mobile devices, there are also a few tweaks to make the process as pain-free as possible. To see the full list of improvements and download the upgrade, head on over to the source link below.