Winamp Highlights:
-New portable device features - transcoding, new sync options, USB thumbdrive player support, video sync, direct-from-device playback
-Faster ripping
-Improved AAC and aacPlus encoding
-Unicode metadata, filename, and title support
-iTunes-compatible gapless playback (MP3/M4A) and encoding (M4A)
-Optional 24bit playback
-ReplayGain support

Winamp Player Features:
-Plays Music and Video Files (aacPlus, MP3, AAC, WMA and more!)
-Compatible with Winamp 2 Plug-ins
-Full Support for Classic and Modern Skins
-Plays Videos (NSV, WMV, and more!)
-Powerful Media Library
-Browse SHOUTcast Radio & TV Stations
-Browse Winamp Music Videos & Songs
-Integrated AOL Video Content (News, Sports, Movies & more)
-AOL Radio Featuring XM
-SHOUTcast Wire (podcast directory)
-Predixis MusicMagic (dynamic playlisting)
-Bundled Visualizations
-Burn CDs (Limited to 2x - 48x in Pro!)
-Rips CDs (Limited to 8x aacPlus, AAC, WMA - Unlimited aacPlus, AAC, WMA and MP3 in Pro!)
-50 free mp3s from Emusic
-Includes Winner of the Internet
-Surround Music Project!
-Includes an MP3 of 'Mercy Me' by Alkaline Trio
-Rip/Encode music into aacPlus, AAC, WMA, or MP3!
-Burn CDs up to 48x!.

What?s New in Winamp 5.541?:
-Now Playing: Discover Artist Songs, Videos, Radio and Photos
-AOL Radio Powered by CBS Radio
-Expanded Flash video support
-Media Monitor: Playing the music web just got even better
-Language packs available in Chinese, Japanese and Korean...