( The wiki Overview of BDJ4 page has been updated with this information, I thought I would post it here also. )
BDJ4 installations have the following structure:
- Main Installation
- Profile
- Music Queues (up to 5)
- Profile
- Music Queues
- Profile
- Alternate Folder(s) (separate database)
- Profile
- Music Queues
- Profile
- Music Queues
- Profile
- Main Installation
- Profile
- Music Queue
- Profile
Reference:
Configuration / Music Queues
Subjects / Music Queues
Player (Options / Show Extra Queues)
Profiles are used to keep different configurations separate. As examples, a profile could be set up for working on music at home, for use with headphones, for DJ work, for practice sessions or for general playback.
Reference:
Subjects / Profiles
An alternate folder is used when you need a separate database. For example, you might have ballroom music in the main installation, and an alternate folder for classical music. The databases and configurations are separate and don't affect each other.
Alternate folder installation is optimized so that the BDJ4 installation is not duplicated, only the data files are separate.
Reference:
Subjects / Alternate Folders