Sonic Foundry ACID
acid comes on two cd-roms. the first cd-rom contains the application and core loop set. the second cdrom contains a set of loops you can purchase and unlock.
to install acid, insert the application cd-rom into your cd-rom drive. locate and run setup.exe if it does not automatically run.
to unlock the loops on the second cd-rom, go to the acid website and purchase the unlocker.