Is there a music player like Winamp?

There's no software in Linux like the current Winamp. If you want something almost similar, try Audacious, BUT the skined interface ONLY supports winamp 2.x skins. I came from a Winamp environment so I can say this, forget about skins and use the default GTK interface and you'll like it, I know I did :)

Audacious is very similar to Winamp and it can even use some of the same skins.

sudo apt-get install audacious

Audacious homepage

The simplest I've found, that supports WinAMP's 2.x skins is the QMMP.

Since I don't need all the bells and whistles (multi-album, fuzzy sort and search, psychic guessing my mood by the way I'm typing...), just plain old fashioned playlists and "open directory" play (I already have my music organized in my HD...), the QMMP it's all I need: plays all the filetypes I have, can play streams, looks for music lyrics and has the same winAMP appearance key bindings. :) I've tried Audacious, Tomahawk (perhaps not all the time needed to get used to it), and others... And I uninstalled them all: they do much more than I need, so I kept the simplest (still looking for a text-based one! :D). But, for people who needs a lot more, they fill their needs. :)