Itunes, Synology NAS, setup

Can I get a good guide on how to use my synology 716+ NAS, to store all my music files, and when I open itunes on my iMac, MacBook air, or windows laptop, or even when I use AppleTV, I can access this music (so its not stored locally on my computers)?

Also, I've attempted this in the past, but with itunes on my iMac, on reboot, it would never mount my share, so it always defaulted to default itunes library location (locally) and messes stuff up.

I also see synology has an Itunes Server package, would that be a solution?

Thanks