Meridian is a music player which allows you to listen to music from popular russian social network vk.com. It communicates with some additional services like echonest.com and last.fm to bring to you some advanced features: recommendations by genres, moods and your tastes, artists and albums search, artist radio and other. Meridian written in C# and WPF 4.5. This is the old WPF desktop version. The source code for new UWP version for Windows 10 can be found here.
Official website: meridianvk.com
Here is a source code of Meridian starting 4 version. Unfortunately most parts of code isn't documented yet.
Changes and improvements are very welcome. Feel free to fork and open a pull request.
The source code is licensed under the Apache License.