I’ve just fitted a multimedia system to a 74ft boat.
Running a Qnap Ts-259 Pro+ 6tb 2 Bay mirrored, with twonkymedia and plex media for iPad viewing. Plus 4 squeezboxs in the cabins flybridge and cockpit area. Using iPeng, ipengparty for guests. With an Oppo Blu-ray and Demon amplifier which is also connected to the network so I can pull media off the server.
All interfaced using iPad, iPhone and iPod. Works like a dream. Esp through the Genelec speakers in the main saloon. 8)