I have an 8GB iPhone 5C, and iOS takes up so much storage I only have 5 of that 8 available to me at any given time. I use apps that take up a lot of storage on said device, but I'd like to listen to my music on the way to/from my school. I realise that the Pi 2 is most likely the best way to accomplish such a task.
For this reason, I have researched media server systems, such as Plex, subsonic, madsonic and Mopidy, but none fit my criteria. Subsonic and Madsonic require a subscription to use apps. Plex has a 1-minute audio playback restriction on it's apps. Mopidy doesn't have compatibility for apps anyway.
So I am looking for a (preferably small) media/music server, as I am not looking to host videos on the Pi, that will run on Debian ports, specifically the ARM port known as Raspbian. Although Ubuntu is alright, I can package Ubuntu Server 16.04 Xenial Xerus for ARM devices.
Thanks for your time, I hope to hear back from you soon!