This app turns your iPhone into an iPod

Never, ever come across apps that allow the use of skins to customise their appearance?
How long, exactly, have you been living under that particular rock?
FWIW, I’ve got that app, the effort required to skin it and give it the same functionality as an iPod Classic is absolutely minimal, and so worth it to get that functionality on my phone - I’m working towards 200+Gb of music, well over 22,000 tracks, having the scroll-wheel makes navigating through so much easier than the Onkyo player I normally use.
Worth every penny! What’s that you say? It’s free? Even better!