The source is the Samsung A697 Sunburst, and yes both video and sound play. They are self-made of my 9 year old grandson with autism doing his ABC's on the iPad 2 I won for him. First real speak we have heard, and important I get these to his other family out-of-state.
I also checked sound with MrFixIt.
These are MP$ (MPEG-$?) files, and looks like the last Codec's I downloaded:
mention a date of 1992. Maybe it is not a Codec problem. I am trying on Media Player, but don't use IE; use CHROME. Did not see the browser as a part of the problem though?!
Derek, no offense meant, but I will try and stick to one person as my typing is lousy and slow to respond to many. Still thank you for any feedback.