From M2 Solutions:
MSplit is an easy to use utility that splits the contents of a multimedia file (AVI, MPEG, WMV or WAV) into smaller files. Files may be split by selecting ranges in a player, split into specific time durations or into a specified number of equal duration clips. MSplit supports the following multimedia formats: AVI (.avi) - video and audio. OGG (.ogg) - video and audio. Wave (.WAV) - audio only. Windows Media (.wmv .wma, .ASF) - video and audio. MPEG (.mpg, .mpeg, .m1v, .mp2) - video and audio.