[gator2k83]

I built my own rom using the ppckitchen. The odd thing was I was having the same issues. All the stock ringtones and notifications would not work when trying to preview them under start > Settings > Personal > phone. I would get the file cannot be played it might be corrupted message, However All my ringtones that i made that were not wma or mp3. I make my ringtones in wav format bc they play faster and with less delay and always work. When selecting one of my own ringers they work fine. So a temp fix might be to convert the tones u want to a wav format.

I do not have the bug with the new mighty 5 rom. as it plays wma and mp3 ringers fine.

Something even more odd was the phone would play mp3's and wma files using any music player such as s2p, wmp, and mort player. The bug only affected the ringers and notifications.