JOAL is feature complete, the OpenAL 1.1 specification has not changed for years.
Since then creative labs closed down support and funding for OpenAL.
Ryan C. Gordon "icculus" has recently registered and re-launched the openal.org homepage in 2014:
http://www.openal.org/JogAmp JOAL include the OpenAL Soft implementation that make OpenAL work out of the box on many platforms.
http://kcat.strangesoft.net/openal.html