Motorola Electrify :: Ringtones/Music Player Only Working Some Of The Time

My music player only works some of the time and other times it gives me an error message. Also when I set ringtones from any music on my phone(ones I bluetoothed, ones downloaded from apps on the market, and also ones I copy and pasted from my computer) they will only work sometimes. Other times they seem to reset themselves and go back to a default ringtones or say unknown ringtone and will not work at all. The only ringtones that work all the time are the ringtones that came on the phone. My friend is having the same problem and the tech at US Cellular said he has had couple people come in with the same problem but they can't seem to find a solution. Also when the ringtones/music player is not working the videos in the "Help Center" on my phone will not work either. There seems to be some kind of glitch. I just want to be sure that there isn't some kind of setting wrong or something before I take this phone back and get something else because I would love to keep this phone, but it's not looking very promising.