Complex sentence: Octoshape uses peer to peer grid distributed bandwidth to minimize the load of the broadcaster's bandwidth where each listener/viewer will relay parts of-or the whole stream they download to several other nodes in the grid.
Split into simpler sentences: Octoshape uses peer-to-peer grid-distributed bandwidth to minimize the load on the broadcaster's bandwidth. The intention is that each listener will relay either part or all of the stream they download to several other nodes in the grid.