Adding Media to Jinzora
You have many different choices for adding media to Jinzora, a few are:

Live Update / Rescanning media | When adding media to Jinzora you must either have Live Update ($live_update) set to true (it is set to true by default) or you must use the "System Tools" - "Rescan Media" tool so that Jinzora will see your new media and merge it into your database. When using the "Add Media" tool this is taken care of for you.

Upload Manager

To add media choose "System Tools" - "Add Media". This will open the upload manager whic will let you upload entire albums through the web interface. If you wish you can upload a single ZIP file (.tar.gz is not supported) and Jinzora will create the appropriate directories and un-zip the file for you, creating all the tracks.
NOTE: There are many issues that this brings up with the different web servers and the amount of data that can be uploaded to them. This is not a 100% reliable system and should be tested in your enviornment before general use.

FTP/SCP SFTP/SMB/etc... | There are many, many other ways that you could load media into Jinzora. Remember that Jinzora simple reads the data within your $media_dir to find what it needs. All you need to do is create files and folders within there and it will all be displayed by Jinzora. You could use just about any method to do this, pick the one that's easiest for you!