For a commercial spa room. Need to be able to select songs with RTiPanel from a computer hard drive running iTunes (?). No need for streaming services. Want it to work like the iPod dock used to. Would be good to directly access a favourites list or a particular song so they can tap a button so the client can hear instructions that the spa records. Interface must be really simple - song selection and volume.

Can't do Sonos because driver won't allow for search. Can I use Yamaha or Denon RTI driver to search music by Category/Artist...etc...?