The Participatory Culture Foundation has released version 4 of its popular cross-platform, open-source audio and video player. Miro 4.0 sees the application transform from a powerful video player into a more all-purpose media management tool.

Miro 4 beefs up its music management capabilities with a host of new features. It’s now a capable music library, thanks to improved music organisation and search tools and the introduction of new features like the ability to automatically import content from iTunes and improved options for creating playlists.

Miro also integrates with Amazon’s MP3 music store, allowing users to purchase and download music into their Miro library directly within the application itself. The program makers are keen to stress that other stores can also be integrated into the program thanks to its open-source foundations.

Miro 4 also improves its media sharing and sync features. Video, music and playlists can be shared and streamed between two computers running Miro on the same network, while other developments see Miro pitch itself as a much-have tool for Android phone and tablet users. Not only does it have featured video presets for quickly converting and syncing to Android devices (alongside similar options for iPhone and iPad), Miro also integrates with both Amazon and Google Android stores, allowing users to quickly sync Marketplace apps with their devices.

Other changes include the ability to control the user interface via keyboard, plus improved performance. Miro 4 is a free download, and runs on Windows, Mac OS X and Linux.