eRightsoft’s Super 2006 is a free Universal multimedia Encoder(convertor) and Player for Windows. It supports conversion to and from the following audio and video formats:

Video formats: 3gp/3g2(Nokia,Siemens,Sony,Ericsson) asf, avi (DivX,H263,H263+,H264,XviD,MPEG4,MSmpeg4 etc..), dat, fli, flc, flv (used in Flash), mkv, mpg (Mpeg I,Mpeg II), mov(H263,H263+,H264,MPEG4 etc..), mp4(H263,H263+,H264,MPEG4), ogg, qt, rm, ram, rmvb, str (Play Station), swf (Flash), ts (HDTV), viv, vob, wmv

Audio formats: ac3, amr, mp2, mp3, mp4, mpc, ogg, ra, wav, wma