Winamp是一款经典的 MP3 软件，从免费到收费，再过渡到免费软件，直到现在整合的版本5，Winamp无愧于Windows系统下播放器的头把交椅，最新版本修正了旧版中的Bug，并增加了一些新功能，如果不喜欢现在的Winamp过于臃肿，建议定制安装，或选择Lite版本。
Nullsoft Winamp is a fast, flexible, high-fidelity media player for Windows. Winamp supports playback of many audio (MP3, OGG, AAC, WAV, MOD, XM, S3M, IT, MIDI, etc) and video types (AVI,ASF,MPEG,NSV), custom appearances called skins (supporting both classic Winamp 1.x/2.x skins and Winamp 3 freeform skins), audio visualization and audio effect plug-ins (including two industry dominating visualization plug-ins), an advanced media library, Internet radio and TV support, CD ripping, and CD burning.

What's new in Winamp 5.33 Beta:
* Improved: [gen_ml] unicode tree item title support
* Improved: [NDE] speed optimizations
* Improved: [ml_history] localized dates
* Improved: [ml_local] Unicode media library support
* Improved: [ml_playlists] now uses m3u8 to retain unicode file info
* Improved: [ml_playlists] playlists in send-to submenu
* Improved: [ml_pmp] playback-from-device of unicode filenames
* Improved: [ml_wire] moved discover page to main page
* Improved: [pmp_p4s] auto-detection of supported file formats
* Fixed: playlist directory loading fix (again)
* Fixed: recursive playlist loading
* Fixed: video lockup when switching video display settings
* Fixed: HTML playlist generation
* Fixed: temp file cleanup after burning
* Fixed: Alt+L from video window
* Fixed: fullscreen video display drawing glitch
* Fixed: recursive shortcut loading
* Fixed ASX Loader not reading local relative paths correctly
* Fixed: [gen_ml] & needs expanding to && for any menu entries showing filenames
* Fixed: [in_flac] not saving genres.txt in multiuser directory
* Fixed: [in_mp3] create id3v2 tag when writing album artist
* Fixed: [in_mp3] workaround for id3v2.4 tags with badly formatted frame sizes
* Fixed: [in_vorbis] writing blank metadata instead of erasing
* Fixed: [in_wave] sometimes not remembering custom extensions
* Fixed: [in_wm] stack overflow on hi-def multichannel audio with replaygain enabled
* Fixed: [in_wm] File Info editor album artist not saving
* Fixed: [ml_local] Modern skin pledit winshade 'Manage Playlist' button bug
* Fixed: [ml_local] ignoring files with ellipsis (...)
* Fixed: [ml_local] editing disc via 'edit selected items'
* Fixed: [ml_local] sorting fix
* Fixed: [ml_local] ratings menu
* Fixed: [ml_local] crash when sorting by replaygain
* Fixed: [ml_local] deadlock when retrieving title to guess metadata
* Fixed: [ml_local] no longer causes unicode files in playlist to display ?????
* Fixed: [ml_playlists] time column and 'status' in statusbar
* Fixed: [ml_pmp]
* Fixed: [ml_rg] multi-channel files being calculated incorrectly
* Fixed: [ml_transcode] bad/missing metadata on transcoded files
* Fixed: [ml_transcode] error on overly long filenames "can't open destination file"
* Fixed: [ml_wire] podcasts that change titles not updating properly
* Updated: Coding Technologies aacPlus encoder 8.0.3
* Updated: [enc_flac] Flake SVN r114
* Updated: [gen_ff] Freetype 2.3.1
* Updated: [gen_jumpex] Jump To File Extra v0.97.11 (build 109)

IMPORTANT: If you upgrade on top of an already existing version then, unless you backup the media library database first, you cannot go back to 5.32 or earlier. This is because the media library database in 5.33 is now saved in a unicode compatible format.