Dynamyc refresh rate change frequency of screen, when M4A files is played.
It happen because Audio is detected as Video (same extention in both Music/Video extenstion)

h4. Steps to Reproduce
* 1st go to FTP dev, download from sample folder :
M4A : 2 files
TAK : 1 file (add this extension to MP audio config, "Warn" MP(BASS) don't play this extension, is only for reproduce the bug )

* refresh rate must be activate.


- Start MP
- Select Music (SharedView)
- Select TAK audio (MP warn, his can't listen audio files)
- Select M4A files (without video] : DRR change !



h4. Additional Information
Tested on Music Rework installer :
http://forum.team-mediaportal.com/threads/music-player-rework.112530/

Original Post :
http://forum.team-mediaportal.com/threads/music-player-rework.112530/page-18#post-977441

Sebastiii worked on it, in his fork ...