Some songs aren't playing on iPhone 4?

When I go to play some songs my phone just skips to another song, the song plays fine on iTunes? They are not corrupt and are the right format.

You just turn off the shake i think it is the problem you have or else delete the songs from your iphone and re sync it, it will be alright or else restore your mobile many or them are saying the sane problem just try out restoring it will be ok

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