WinAmp adds a music store, powered by 7Digital
Like the Ubuntu One Music Store, Winamp's downloads will be provided by 7digital. As I mentioned with U1, one of the key features here is availability: 7digital is available nearly everywhere, unlike some competitors (such as Amazon). 7digital also boasts a massive catalog of about 6 million tracks available as high-quality MP3 (and some WMA) files.
Right now the download store is only live for US and UK Winamp users. Patience, Winamp fans across Europe -- you'll be receiving access over the next several days.
Check out the enthusiastic official post from the Winamp crew for more details!