Available files for version 0.63.4
Old neoraine, look there
And there is a Mac OS X version !
For linux, you can use this debian package.
If you want to add this to your apt sources, you can by adding this line :
deb http://rainemu.swishparty.co.uk/html/archive/debian/ unstable mainto your /etc/apt/sources.list file. It's working for debian testing, amd64 and i386 binaries. If you have ubuntu, you can try it anyway, it might work too, I won't maintain separate ubuntu packages, too much trouble.
Since apt will complain about unsigned packages if you just add this line, you can add the public key from this link. Just download it, and then use :
apt-key add pubkey.txt
Last time I tried to do that, I forgot my secret pass phrase in less than 6 months, that's because I rarely use it. This time it shouldn't happen anymore !
You can also compile raine from source, but the docs for that are still about the old versions < 0.50.0. Basically the changes in 0.50.0 are that you don't need allegro anymore (except if you want to build the savegame converter), and you need SDL_image and SDL_ttf. Here is a short guide about what you will need for that.
Logiqx has also some notes about compiling raine32.