If you want some music on your phone, not your micro sd, you might have some issues trying to get that to happen. Here is a quick solution for you.

1. Find an mp3 of your choice.
2. On windows, allow viewing of file extentions.
3. Change the extention of the mp3 file to qcp
4. Create or Locate the My_Ringtones folder on your micro sd card.
5. Put your modded mp3 in this folder.
6. Stick it in the phone.
7. Move the ringtone in the card memory manager. It will no longer be on the micro sd.
8. Go to your media in main, find the file, and tap it. It should play out.

If you set the ringtone as a ringer type, it may limit it's playback depending on what it's alarming for. For messages I notice it only plays for 10 seconds or so.