My experience with Innuos operating system and interface has been very good. Like you, I had my music stored in external files, and partly on the local disk of the Surface Pro 3 I was using as my server. To transfer these data to the Innuos server, I did as follows: - plugged the ZENith in my router, via ethernet cable - connected to the Server via PC or tablet, by using the internet browser and going to my.innuos.com - for the external drives: plug the USB drive in the dedicated port of the Innuos server, and start the Import function via remote, the select the USB port - for the local files on the PC: I first moved them in a shared folder on the Innuos server, then started the Import function again, this time selecting the "auto import" option Here you can find the detailed instructions: http://www.innuos.com/en/go/manual-managing-server-import-requirements All this worked very easily, and metadata were automatically found by the system in 99% of cases. USB was much faster. If you have music files stored in a format that does not support embedded metadata (e.g. dff, wav), you need to organize them in an Artist/Album folder structure before starting the Innuos import. Once you have all your music in the server, Innuos lets you use Ipeng (iOS), OrangeSqueeze (Android), Squeeze Remote (Windows) or Roon (all platforms). In my case, after some hesitation due to the steep price, I tried Roon and I must say that it is hard to go back to anything else (sorry for my wallet).