In any case, if you are not comfortable going through the payment process (to end up not paying anything), you can always install the tool directly from the manufacturer’s website. Why the tool appears in Software Center as purchasable, when it is actually free, is not clear. Note that the software is proprietary and, although you are forced through the U1 payment platform, you are not charged anything. Figure 1: The YouTube to MP3 Converter is available from Ubuntu Software Center.
