My XP OS died and wiped computer. Installed Ubuntu 12.04 OS yesterday. Cannot afford to buy OS right now on Social Security. I cannot play music videos on youtube, listen to lectures in my online classes, and play games on Facebook. Cannot install adobe flash player. I tried several times for flash 10 and 11, and get error box stating not current or correct channel. What do I do? Some player starting with a T is on here but it does not work with what I need to do. Help!