TL:DR; MP4 To MP3 is an easy, efficient, fast yet free MP4 to MP3 converter.
MP4 To MP3 is an easy, efficient, fast yet free MP4 to MP3 converter. It is capable of converting MP4 to MP3 easily and quickly.
Bluefox Video to Audio Converter is a simple and easy to use tool, which can extract audio from video to all popular audio formats, such as conver MPEG to MP3, and MP4 to MP3, MP4 to WMA, AVI to mp3, etc.
Aiseesoft Mac iPhone Transfer Platinum can import local music, videos, ePub, PDF, images to iPhone, and export iPhone music, movies, pictures, TV shows, Podcast, iTunes U, eBooks, voice memos, Camera Roll, camera shot, SMS(MMS), and Contacts to Mac.
4Videosoft Mobile Video Converter can convert all the common video and audio to mobile 3GP, 3G2, MP4, AVI, WMV, H.264/MPEG-4 AVC(.mp4), AAC, MP3, M4A, MP2, WAV, WMA for all the portable players like Zune, iPod, iPhone, PSP, BlackBerry, Nokia, ect.