SonicWeb: My freetime project is the german top mac music app, what now?

[P4tr3ck]

Since its release at monday SonicWeb went straight to the top of the german mac app store in the category music. It also broke into the overall top 10. Feedback is very positive so far. It seems I have something there that resonates with music lovers.

Everything has been done by myself in my freetime. This includes the design and implementation of the app itself, the backend with its REST-API and the website as well.

The question I have is, what now? What are the next reasonable steps to turn this into a sustainable business? It seems most of the technical problems are solved and I should turn my attention to the busines side. But I am a developer not a business person. Therefore I am reaching out for advice. I am sure many of you went through the same steps as I do at the moment. What did you do to turn your side project into a sustainable business?