Is it possible to connect to same server from Mac/PC and PlayStation 3 (PS4,PS Vita in future)
No. The PC version of Minecraft and the console version of Minecraft cannot connect to each other. The Playstation version of Minecraft does its multiplayer over PSN. You connect directly to another player’s world, rather than setting up a server. Therefore, you cannot connect to a PC Minecraft server on PS3, and vice versa.