4Videosoft Video Converter Platinum
It is the most advanced total video converter which can convert between any video formats including MPG, MPEG, MPEG2, VOB, MP4, M4V, RM, RMVB, WMV, etc and extract audio from these video. It also converts between all audio formats including MP3, MP2, AAC, AC3, WAV, MID, MIDI, WMA, M4A, RA, RAM, OGG, APE, AU, FLAC with excellent conversion speed and quality. Then you can easily full enjoy your portable player. It can support all the popular portable players