[WIP] Proper Audio/Video Dumping

Screwed up the previous PR, replacing with new PR

Old notes: https://github.com/dolphin-emu/dolphin/pull/1183
This will cause a crash, get rid of the if(). If you must conditionally save/load, then save the state of this variable, then check the state of that, so we get the state it was in at the time of saving, rather than currently.