Thanks for that. When I did the re-install, the recommended route (in the install.exe file) was to install everything onto PC/laptop , which I did. I then trimmed the contents of RealTracls by moving those instruments that I would be unlikely to need to an external drive For my jazz songs all I need are piano, guitar, bass and drums. This has been partially successful but I would like more space so need to find other elements of BiaB that I can safely move.