Apple today released iTunes 12.4.2 with a fix for an Apple Music playback bug related to short songs and the app’s “Up Next” feature. Apple described the issue in its release notes:
The new iTunes version lands today alongside OS X El Capital 10.11.6, iOS 9.3.3, tvOS 9.2.2 for Apple TV, and watchOS 2.2.2 for Apple Watch.
This update resolves a playback issue with short Apple Music songs in your Up Next queue
Apple also released new betas today for developers with iOS 10 beta 3 alongside tvOS 10 beta 3 for Apple TV and watchOS 3 beta 3.
iTunes version 12.4.2 is available to install via the Mac App Store with the OS X El Capitan 10.11.6 update that brings various improvements for stability, compatibility, and security.