If you have a computer with a AMD64 processor you can install a free Ubuntu operating system and get the benefit of 64-bit processing (basically it's faster) without getting a Windows Pro OS.
One mistake I made was when I installed Adobe's flash for AMD64 was not removing the nspluginwrapper which let 32 bit flash, which I had previously installed, work with a 64 bit system, as suggested by Softpedia.
Not removing made it hard to click on the play and volume buttons using youtube and other video sites.
All you need to do to fix it is run Synaptic Package Manager, look for nsplugin and remove it and the other programs that work with it. Youtube now worked fine and I didn't need to reinstall anything.