Apple on Monday released a minor update to the iTunes application to address bugs, including Apple Music "up next" problems with songs less than a minute long.
According to Apple's release notes, iTunes version 12.4.2 for OS X fixes the issue that prevented iTunes Music songs less than a minute long from buffering properly, causing iTunes to stop playback.
Earlier Monday, Apple released updates for iOS 9, OS X 10.11, watchOS 2, and tvOS. Apple's iTunes version 12.4.2 is a 110MB download, and is available with the rest of the day's updates from the Mac App Store.
The last update for iTunes came in early June, when Apple squashed a variety of small problems and bugs, including compatibility issues with VoiceOver in OS X.