HELPPPP!! need converter from mp4 to mp3 or wave

Question

Does anybody knows how find converter for mp4 to mp3, wav, or anything that readable for the car cd player?
Thanks
Mac Book pro 17 inch   Mac OS X (10.4.5)  

Answer 1

You should be able to use iTunes to convert your music to a different file format.
*To convert a song's file format:
Choose iTunes > Preferences, then click the Advanced button at the top of the window and click Importing.
From the Import Using pop-up menu, choose the encoding format that you want to convert the song to, then click OK to save the settings.
Select one or more songs in your library, then choose Advanced > Convert Selection to MP3, Convert Selection to AAC, Convert Selection to Apple Lossless, Convert Selection to AIFF, or Convert Selection to WAV. (The menu item changes to show what's selected in your Importing preferences.)
To convert all the songs in a folder or on a disk, hold down the Option key and choose Advanced > "Convert Selection to," then choose the folder or disk containing the songs you want to convert. All the songs in the folder or on the disk will be converted except songs you purchased from the iTunes Store. (Purchased songs are encoded using a protected AAC format that prevents them from being converted.)
*reference: iTunes Help
Hope this helps.