Here are the latest snapshots of jpcsp. Changes includes improvements in mpeg module , improvements in GE , speedups in compiler and fixes to several modules . Atrac3plus might work a bit better now as well
Also don't forget pspudb a tool is being developing from jpcsp , pcsp team and it's a frontend that includes support for all the above emulators.Check it out at : http://www.pspudb.com