Hi. Thank you for your support and feedback. I did not yet know about qobuz.com — thank you for that new info. The reason I started with iTunes and AmazonMusic is that they both provide API services to search their catalogs programatically. GooglePlayMusic store is also a great source, but they do not provide such API services and I was not able to include them. But, 7Digital does have such an offering and I will add them once I complete features that I am already developing. Please support my project and share it with other fans.