 OpenBSD is freely available in various ways : the source can be retrieved by anonymous CVS , and binary releases and development snapshots can be downloaded by FTP , HTTP , and <unk> . <unk> CD @-@ ROM sets can be ordered online for a small fee , complete with an assortment of stickers and a copy of the release 's theme song . These , with their artwork and other bonuses , are one of the project 's few sources of income , funding hardware , Internet service , and other expenses . 
