I'm considering getting Pro Tools LE 7 for Mac OSX Tiger/Mbox because
it accepts Acid and Rex files. I know about Acid, but I'm not sure
about Rex. Is it a wav file, or what, and where do I get such files?

Is Acid/Rex in PTLE drop and drag, just like in Logic? Is there a Loop
Browser? Since I "acidized" my Acid files in Soundtrack and converted
them to aif for Logic use, can I use these aif files in PTLE 7?

Thanks for any answers.