Background audio, playback controls and the sleep timer in NB Player

Start listening, then leave the player screen

Open an audio file from the audio section or your file manager. Once playback starts, you can return to the library without ending your listening session. The media notification offers playback controls outside the player screen. Notification presentation and controls can vary with Android version and device settings.

Progress and volume are different controls

The progress slider shows your position within the track and the total duration. Drag the handle to the time you want, then release to seek. This does not increase or decrease device volume. Use the physical volume buttons for loudness. Keeping these jobs separate helps avoid accidentally skipping through a track.

Queue and speed

Use the queue to review upcoming tracks rather than leaving the player to find every file. Speed controls change playback pace and can help with spoken recordings. Choose a speed you can follow and restore the normal setting if playback feels too fast or slow. These controls do not change your original file.

Sleep timer and end of track

Sleep-timer options are available within the playback tools. Select the appropriate setting before putting the phone down and check the displayed option: choosing a duration differs from stopping at the end of the track. This ends a listening session; it is not an alarm or audio-recording feature.

If background audio stops

First note when it stops. Was the app force-stopped, did a timer expire, or did the queue finish? Also review app-specific battery restrictions if the system ends playback when the screen turns off. Do not broadly disable device protections. Adjust only the setting relevant to the problem after understanding its effect.

A quick checklist

1. Start the file and confirm audio is playing.
2. Use progress only to move within the track.
3. Use device buttons for listening volume.
4. Check the timer and queue before troubleshooting background playback.