Listening to music on a computer can be challenging because most computer audio systems have severely limited fidelity. An audio equalizer application can help. In Short Circuits: Maybe you've wondered from time to time if your antivirus application might have missed something. Getting a second opinion is good idea and it's easy. I've explained before how to use a Registry edit to turn off keys that you don't want -- Caps Lock, for example -- but there's another option if Registry edits make you nervous. Nearly 20 years ago, Microsoft made a stupid mistake by hiding file extensions in the Windows file explorer. This has never been corrected, but the workaround is easy. In Spare Parts (only on the website): Adobe will soon release a Photoshop update that includes some remarkable improvements for content-aware fill. • August set a new all-time record high for robo calls and nearly half of them are scams. • Maybe you'd like a Star Wars stormtrooper that obeys your every command. One can be yours for $230.