mMusic SleepTimer is an extension for the mMusic Audio Player application, designed for Android devices. It is a free program developed by Stanislav Bokach, falling under the category of multimedia and the subcategory of music and radio. However, it cannot be used with the mMusic Mini version and requires the full version of the mMusic Audio Player to function properly.

This extension allows users to set up a timer to automatically stop music playback after a specific period. The timer can be accessed through the player's main menu, making it easy to use and customize. With mMusic SleepTimer, users can enjoy their favorite music without worrying about stopping the playback manually.