Yes, the skeleton directory for all new accounts is located in /usr/local/centovacast/system/skel/. Any files or directories you place in the skeleton directory will automatically be copied to the vhosts/USERNAME/ directory for each new account.
If you want to pre-load media, place it in the /usr/local/centovacast/system/skel/var/spool/media/ directory. You can optionally create a bind mount in the media directory which points to a common directory if you wish to share a common set of MP3s amongst your streams.
