LastFmLib.net lets you access all Web services provided by Last.fm. This also includes an implementation of the Audioscrobbler 1.2.1 submissions protocol and radio api. Also, LastFmLib.net provides a set of useful classes, e.g for caching requests and pictures and for accessing simple request easily via the LastFmClient class. The library should be fully Mono compatible (the test with MoMa was positive).
Quasar Media Player is a light-weight, fast, and convenient media player for mobile systems. It offers many of the features found in modern desktop media players, like fast library overview and filtering along with the ability to handle large libraries very well. It has several unique features that give it unprecedented flexibility on a mobile device, like a zoomable interface for better readability even from a distance, or auto-generated playlists from a set of locations. It offers flexible support and handling of cover art images, and features a cover art album browser and built-in downloader. Quasar is highly configurable and can be operated completely via keyboard, remote control, or touchscreen.