Age old question here... Many of my ripped movies have DTS tracks, but i've quickly learned that DTS doesn't play well with Synology NAS systems and many other devices. My set up is pretty simple. 2.1 in the living room with a decent sub and sound bar from Samsung. I think the most I could see myself doing in the future is 5.1 with some standing speakers. Should I just keep my DTS tracks on the movies or doesn't it make no difference if I convert to AC3? Space isn't really an issue. I guess another option is to adjust the movie files to hold one track for optimal sound (assuming there is a difference) and another for compatibility. I can use remux to change the audio track format, but it looks like it writes over the source track. Is there any way (or other software) to keep the source and then create a separate audio track in AC3?