Convert sln to sndr

Download and install the latest version of Filestar.
Right click on one or more Sln 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 .sln and .sndr?

Name: Asterisk PBX; Sounder Sound File
Extension: .sln; .sndr
Format: Binary; Binary
Category: Audio; Audio
Developer: Digium; Cakewalk
Description: Asterisk PBX ‘signed linear’ 8khz, 16-bit signed integer, little-endian raw format.; The SNDR file extension is used for older 8-bits mono sound format which was used in old Sounder program.
MIME Type: application/x-asterisk; audio/x-sndr
Sample: sample.sln
Wikipedia: .sln on Wikipedia