How Can I Change The Format Of 3gp to mp4?

How do I change the mp4 format that itunes downloads in to an mp3 format so I can put it on my mp3 player? I will be using windows media player to actually put the songs on my mp3 player. Will it be best if I just burn a cd and then import it back to...

hello sir i have a china mobile does not play 3gp, avi,mp4 formats sir which video format can i play on it.it record the video in avi format and plays it but does not support my converted file

i got a mp4 file from a friend and i wish to sync them to my ipod but it says. it could not sync because it was not found. as i transfer them to my desktop,. the file appeared to be a real player icon. but it's mp4 format. it think the solution is to...

I belong to a mobile video site that has videos in 3gp but I want to use them on my PSP, which requires the videos to be in mp4 format. Any suggestions?

can flv, divx, xvid etc be converted into mp4 or 3gp formats which is supported by my phone?

i have some vids that i want to convert to 3gp format for my mobile phone

I have a video saved onto my computer and am having trouble to get it on my psp when I saved it onto my psp it says unsupported data. I tried psp video 9 and it didn`t work out for me can someone help me to change the video into mp4 format? I just want...