Convert m2v to sndr

Download and install the latest version of Filestar.
Right click on one or more M2v file(s) on your desktop and select Convert with Filestar.
Type convert to sndr in the search box.
Press Convert.

What is the difference between .m2v and .sndr?

Name: MPEG-2 Video; Sounder Sound File
Extension: .m2v; .sndr
Format: Binary; Binary
Category: Video; Audio
Developer: Moving Picture Experts Group (MPEG); Cakewalk
Description: Video only (without audio) encoded using MPEG-2 compression; The SNDR file extension is used for older 8-bits mono sound format which was used in old Sounder program.
MIME Type: video/mpeg; audio/x-sndr
Sample: sample.m2v
Wikipedia: .m2v on Wikipedia