Off-line music player
First off, I hate using itunes. So, this app is how I listen to music saved to my phone. It activates a WiFi server, to which you upload from local PC (both must be on same access point/lan). It's a little buggy in that repeat function crashes app, but it's a very dependable player for MP3s. I've been using it daily for last 3 years and an very happy.