A few issues:
1- There are 2 "Menu" buttons, the one on the left does nothing, look
HERE.
2- I can't swipe the screen if I'm on the "search" page.
3- If I change orientation, I see
THIS error.
4- You should change the term "Reset" for something else (like clear search results or something like that) and show an indication that something has been done.
5- Show a message that you are downloading when someone taps on the "Save" icon, I know you can see the progress in the status bar, but most people will not pay attention to that.
6- Improve your error control and message when an MP3 cannot be played, showing a toast is not enough, you have to let the user know there's a problem.
