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.
Aiseesoft iPhone 4 Transfer for Mac is one professional tool for Mac iPod/iPhone 4 users. Because it owns the double functions of Mac to iPhone 4 Transfer and iPhone 4 to Mac Transfer, iPhone 4 to iTunes Transfer.
4Easysoft iPhone Ringtone Creator for Mac offers you the easiest and quickest way to create a ringtone for iPhone on Mac, or convert video to iPhone M4R ringtone.
WinX Free MP4 to PSP Converter, a totally free MP4 to PSP converter, specializes in free converting MP4 videos to PSP-MPEG4 video for playback on PSP device. Also this free MP4 to PSP converter also allows you to take screenshot as PNG images.