Fix this player does not support this type of audio file error
There are a number of solutions to this error. Go through the following steps:
Go to Settings - Applications. Then swipe right to left to go to All (along the top). Then find the App called Media Storage. Click on that and select Force Close. Then select Clear Data. (warning: this will delete the cache for your media player so you may lose things such as recently played, most played etc. But you will not lose your music).
Next, go back to list of Apps and find Music Player. Again, press Force Close and then Clear Data.
Once that's done, go to the Play Store and download an App called Re Scan Media and run it. Wait 5 minutes for the device to re-scan your media.
If you still cannot play your music, then try turning your phone off and removing your SDCard / memory card (if you have one). Then turn the phone on without the card. Then turn it off again and reinsert the card. Finally turn it on again with the card back in.
If you still can't play music, then some users have said that there may be a conflict with the Twitter App. Try uninstalling this and see if the error persists.