I am satisfied with this plugin (prof. version !) and also with the support, who helped me always within 24 jours, even on sunday. This is really a recommendation for anyone who wants to sell musicfiles and albums online with stressless paypal payment. It has a good code architecture and is easy to use. I hope there will be more design options to come, e.g. for the audioplayer or the display of the search results or the filter results.