Is this normal? Or would I need to get the Pro Version to get this. I seem to recall using an earlier version in which this as not a problem. (Or maybe I was using a different video editing product.)
Hello swampwiz,
Thank you for your question.
AVI Trimmer +MKV should play both video and audio content of your file. Please check if the Audio checkbox was enabled while the playback as on the screenshot below.
(http://www.solveigmm.com/images/stories/forum/avi_trim_27nov12.png)