Synology DS115j ... is it OK?

[simoncn]

If you use ffmpeg (flac:wav24;), you can set streaming options for things like convolution (room correction) and replay gain. If you don't use ffmpeg (flac:wav24), seeking forwards and backwards in the track should be faster.

To see the version of the default ffmpeg, login to the NAS using ssh (on Windows, use putty) and type the command: ffmpeg