Download

You will find the current version of Csound in http://sourceforge.net/projects/csound/files/csound6/. In the folder with the most recent version number you will find different files:

PLATFORM LINK
   
Desktop  
Windows 6.07.0 beta
OSX 6.07.0 Beta
Linux Debian
Ubuntu
Fedora
Other (use source link below)
   
Mobile  
Android Android Application
Csound for Android SDK - 6.06.0
iOS Csound for iOS SDK - 6.05.0
   
Web  
Emscripten 6.06.0
Portable Native Client (PNaCl) 6.06.0
   
Other  
csound~ for Max 1.1.3 (Windows)
1.1.3 (OSX)
   
Source  
Source Code 6.06.0 (.zip)
6.06.0 (.tar.gz)
   

Building from source

Building Csound from source or from the git develop branch is not very difficult on Linux, and can also be done on Mac and Windows. How-to descriptions can be found in the BUILD.md file included with the Csound sources, also available online here.