1)   RM MP3 Converter 4.3.1612
RM MP3 Converter supports batch conversion between RM, RMVB, MP3 files. It converts the audio files digitally-not through the soundcard-which enables you to make perfect copies of the originals.

 2)   MMshall Video Audio Separator 6.8.99
MMshall Video Audio Converter is a powerful audio ripper for video. It can extract audio from almost all video formats, e.g. DivX, XviD, AVI, WMV, MPG, MPEG, ASF, RMVB, RM, RAM, MOV, VOB, FLV, SWF(simple), 3GP, 3G2, MP4, SVCD, VCD to MP3, OGG, AMR, AAC, AC3, WAV formats. Also you can use MMshall Video Audio Converter to convert your other format audio music to these formats herein. MMshall Video Audio Convert...

 3)   Any Media to MP3 Converter 3.0
Any Media to MP3 Converter is a powerful audio tool which can convert WMV, ASF, RM, RMVB, AVI, MPEG, WAV, WMA, OGG, RA, MOV, MKV, CD, VCD, DVD, etc. popular media files to MP3, WMA or OGG files.

 4)   Altdo Convert Mp3 Master 7.6.31.1521
avi to mp3, divx to mp3, xvid to mp3, mpeg to mp3, mpg to mp3, dat to mp3, vob to mp3, wmv to mp3, asf to mp3,rm to mp3, rmvb to mp3, mov to mp3, qt to mp3, avi to wma, divx to wma, xvid to wma.