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Editorial Team
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Asked: 2026-05-27T14:58:20+00:00

I have an app for WP7, using BackgroundAudioPlayer as we need to play in

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I have an app for WP7, using BackgroundAudioPlayer as we need to play in the background. The problem is, when there’s already an app playing audio in the background, I can’t get my AudioPlaybackAgent work, the previous music just keep playing.

The document introduced this way,

BackgroundAudioPlayer.Instance.Close();

by which I can only close the audio that is played by myself or Zune, but it doesn’t work when the audio is played by other apps.

So is there a way to close all the playing audio?

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1 Answer

  1. Editorial Team

    OK I fixed it.

    What I did to get it play is like this, first I set a track to the player:

    BackgroundAudioPlayer.Instance.Track = ...;

    Then an OnPlayStateChanged event will fire in the background agent, where I call the BackgroundAudioPlayer.Instance.Play() method. This seems to work great.

    But if the background player is already being used by another app, the PlayState won’t change to TrackReady when I set the track, and consequently the event won’t fire.

    To fix this, I simply call the .Play() method in the main UI thread, right after setting the track. And it works.

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