Well, I tried using google to get the code of the client, but nobody posts the source and I don't get half of what to do after you get the decompilers and deobfuscaters if you try it yourself, the readme's are too confusing for me :p
For somebody who can make some sense out of this….
Java decompiler -
http://www.steike.com/code/java-reverse-engineering/Java deobfuscator -
http://www.fileoffset.com/ or
http://sourceforge.net/project/platformdownload.php?group_id=199286 for the download
Jotti says they're clean
So in theory you use the Java decompiler to get the code, if it's obfuscated you use the de-obfuscater. Then you have the code, and you can make it into your own client? IMO it seems to easy…I must have soemthing wrong :p
Btw, some people I found on google were making clients that had map hacks and stuff like that. It might be outdated, but it'd be awesome if it could be remade :)
[Offtopic] I thought SRL wasn't supposed to come up on google?