Is there a giant lowercase n on a sticker on your palm rest, or a Windows sticker? The n would be the Ubuntu version of the Mini9, if it's got a Windows sticker, it's running Windows.
Or flip the unit over, on the bottom there will be a Windows sticker with the install key printed on it, if it's a windows version. There'll be a smooth black space where that would have been, if it's a Ubuntu Linux version.
There are no Linux versions of iTunes or Safari.. You can get Firefox for Linux.. Check out "Songbird" for a iTunes styled Linux media player..
Or you can just put OS X on your Mini9.. Assuming your SSD
is large enough (it can be as small as 4gb for the Linux units)..