outcoldplayer does not play anything

At first please follow this article Troubleshoot problems with an app, one of suggested solutions is to try running the Apps troubleshooter.

If you have Windows N or KN version, please take a look on this article Media Feature Pack for Windows 8.1 N and Windows 8.1 KN Editions: April 2014, you need to install Media Feature Pack. 

If player shows that it is playing songs, but you don't hear anything - you need to verify that you have latest drivers installed. 

The strange thing which our users reported that Windows Store application are not compatible with some video drivers which you can install via driver manufacture websites. You can fix it by reinstalling them with Windows Update. 

You can also try to find some helpful Windows forums:

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