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I don't like OOG because it weighs so damn much. As for converting files, I can tell you that it's easy to do nowadays. There are many different converters on the internet that provide free services. If applications that can work with hundreds of additional files, including OOG and WAV. I use various sites to convert mp3 to wav as I find this the most convenient method. They allow me to convert the audio files I need quickly and, very importantly, without losing quality. Try it and tell me if this method suits you. Best of luck!