Is it impossible to start playing music with SDL2_Mixer due to an error message indicating an unrecognized audio format?

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No, it is not impossible to start playing music with SDL2Mixer due to an unrecognized audio format error message. This error message means that the audio file format is not supported by SDL2Mixer. To resolve the issue, you should either convert the audio file to a format supported by SDL2_Mixer or use a different library that supports the audio file format in question.