Xine is a free multimedia player. It plays back CDs, DVDs, and VCDs.It also decodes multimedia files like AVI, MOV, WMV, and MP3 from local disk drives, and displays multimedia streamed over the Internet.It interprets many of the most common multimedia formats available – and some of the most uncommon formats, too.
Using this command in terminal(Applications->Accessories->Terminal) to install Xine:

sudo apt-get install xine-ui libxine1-ffmpeg

You can also goto its homepage to download xine,or get more information.

After installation,you can open up xine from Applications->Sound&Video->Xine.