title: Manage Audio files in a Music app
body: <p>I'm developing an Android Music app.
  In my app, when app start, I use a cursor to load all music file in SD Card and show them in a recyclerView but I think it is't a good way (a little bit slow). 
  I see in Google Music app, it uses SQLite database to manage music file. So I think when app start, I will load all music file an save information to SQLite database. And in the next time app start, if in SD Card have a new music file (downloaded from some website) I also load all file and update to SQLite database again. 
  Do you think it a good way to develop a music app ?
  Could you have some suggestion for me ?</p>
  
  <p>P/s : sorry about my English :D﻿</p>