scans the user's system for media files to add to the Media Library database. It supports full Unicode filenames and Unicode metadata for media files. In the Media Library user interface pane, under Local Media, several selectors (Audio, Video, date, and frequency) permit display of subsets of media files with greater detail. Adding album art and track tags Get Album Art permits retrieval of cover art, and confirmation before adding the image to the database. Autotagging analyzes a track's audio using the Gracenote service and retrieves the song's ID2 and ID3 metadata. Podcatcher Winamp can also be used as an RSS media feeds aggregator capable of displaying articles, downloading, or playing such content as streaming media. SHOUTcast Wire provides a directory and RSS subscription system for podcasts. Media player device support Winamp has extendable support for portable media players and Mass Storage Compliant devices, Microsoft PlaysForSure, and ActiveSync, and syncs unprotected music to the iPod. Media Monitor Winamp Media Monitor allows web-based browsing and bookmarking music blog websites and automatically offering for streaming or downloading all MP3 files there. The Media Monitor is preloaded with music blog URLs. Winamp Remote Winamp Remote allows remote playback (streaming) of unprotected media files on the user's PC via the Internet. Remote adjusts bitrate based on available bandwidth, and can be controlled by web interface, Wii, PlayStation 3, Xbox 360, and mobile phones. Plug-ins In February 1998, Winamp was rewritten as a "general-purpose audio player" with a plug-in architecture. This feature was received well by reviewers. Development was early, diverse, and rapid: 66 plugins were published by November 1998. The Winamp software development kit (SDK) allows software developers to create seven different types of plug-ins. Input: decodes specific file formats. Output: sends data to specific devices or files. Visualization: provides sound activated graphics. DSP/Effect: manipulates audio for special effects. General Purpose plug-ins add convenience or UI features (Media Library, alarm clock, or pause when logged out). Media Library plug-ins add functions to the Media Library plug-in. Portables plug-ins support portable media players. Plug-in development support increased Winamp's flexibility for, for example, a plethora of specialized plug-ins for game console music files such as NSF, USF, GBS, GSF, SID, VGM, SPC, PSF, and PSF2. Skins Skins are bitmap files which alter the aesthetic design of the Winamp graphical user interface (GUI) and can add functionality with scripting. Winamp published documentation on skin creation in 1998