I've heard that running acid through virtual pc might not be a good idea. It says in the 001 manual, that 5.0 LE can import wav files. If Rex files can be changed to wav files in a pc, then there should be no problem. Once you've imported the file into 5.0 LE, you'll be able to use time compression/expansion to alter it to a certain extent, but probably not too much before the pitch will change. Anyone at Digi, care to comment? haze