The Converted mp3 file only plays MY side of the conversation

Hi I am new... I have been using the Skype replay telecorder to record a conversation.
This worked well & successfully...BUT I needed to convert the avi file into a mp3 file.
So I converted the avi file to mp3 using the Replay Converter program.
But when I replay this mp3 file...it only converts MY side of the conversation...
which unfortunately defeats the purpose of recording the Skype conversation.
Any suggestions please.

Converted Skype conversation avi file to mp3. mp3 only plays MY side of the conversation

Thank you...Mary Bosveld, the Supergranny, Australia