Addendum: The reason I am asking is because I'm suddenly having trouble burning. For both .mds and .iso the burn seems to go just fine but my DVD player says "Cannot play disc". I've used a couple of disc types, both of which I've used successfully in the past, and my new computer has also burned things with ImgBurn in the past.
I downloaded the most up-to-date version of ImgBurn and tried to slow the burn rate, but truth-be-told (in case it isn't obvious) I have no idea what I'm doing or why...
So based on this totally random set of potentially useless information, does anyone have any suggestions for me?