Thanks for writing.
Converting your app to open source means that other developers will have access to your source code. They will not have free access to any non-free dependencies your project has. For example, if someone downloads your source code, and tries to build it, he or she will also have to download RadControls for Windows Phone from our website. If you upload the rad controls binaries along with your source you'd be violating our license agreement.
In short, you are free do whatever you want with your source code, however, your are not permitted to freely redistribute the RadControls binaries.
To make it easier for other people to build your source code, please create links on your project web page to the external dependencies required. For RadControls for Windows Phone the link should point to the RadControls for Windows Phone page.
I hope that information was useful.
Please feel free to write again if you have other questions.
the Telerik team
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