100$ - USB 2TBytes drive
500$ - Oppo BDP-103
The Oppo can output your sound via analog, it has a very decent onboard DAC, and can read media files, including SACD's DSF files from a USB hard-drive formated to NTFS, and play files accessed over regular (Wired of Wi-Fi) network shares and, if desperate, it also works with DLNA
On top of that you get the ability to play SACDs, BD-A and DVD-A optical media.