+1 to what Chris said on music vs. video servers (he's the expert anyway).

Since you asked for suggestions - I love my Sonos system coupled with a NAS to serve up the files. For the NAS (Network Attached Storage) there are many options available depending on features and price point. Sonos is not cheap but IMO is worth it if you want multi-room audio. And it plays a very wide variety of file types including FLAC.

Dan
On-Wall M5HP LCR, QS8 & EP500 in 7.1