Adobe Flash keeps crashing, sound doesn't work (speakers work fine) - done everything I can to fix, nothing works

Yesterday I noticed on grooveshark (a site where you can stream music), it wasn't loading. everytime I would try and load it, the plugin shockwave flash would crash - sometimes, the site would load, but when i'd stream a song, no sound would play. Youtube videos can't play as well - the page freezes up before the video can load anything. I've tried downloading shockwave flash on mozilla to see if it's just a problem for chrome, but it's my entire computer. Nothing involving sound/adobe flash is working properly. I've spent hours researching on how to fix it - delete caches, disable hardware acceleration, etc. Nothing seems to be working. does anyone have any tips on what I can do to fix this?