Why won't my iPhone 4 play music?

For the past two days my iPhone 4 hasn't been playing any music of out 'music' my alarm clock works, when i check/change my ringer that works too just can't play music, nor is there a volume bar at the bottom. Yes I've tried looking at my settings and adjusting them, try turning it off and on, resetting the IPhone, and updating it on iTunes, and still nothing's working. Has anyone else experienced this? I don't have warranty on my phone so I can't bring it in. If anyone has any suggestions it would be greatly appreciated.

Added (1). I should mention I've had the phone for about three months or so, my music use to work, and I've already tried updating it with Itunes.

Try to updated with Itunes, maybe sometimes the problem is with the music and not with the phone.

Go to mycomputer and quick format it your iphone.
see if your music on itunes is not corrupted by any of the songs.
delete everything from itunes and add just clean fresh ripped songs from your cd's again.
do you see the list of music on the iphone? If yes then its hanging or the file/files are corrupt.
if not then you updated it half not full.
best way, update your iphone 4 without restoring anything (clean update) then rip new songs from your cd's to itunes and just add those to your iphone after the full update is complete.
:) hope this helps
cheers!

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