Built-in computer speakers aren't known for their audio quality, which is why, if you spend any time at all watching online videos or listening to tunes while you work, it's worth it to invest in a decent subwoofer and speaker set. I like Edifier's E3350 for its clean design and the shot of colour it will add to any home office set-up. Bonus: it includes a headphone jack and an input for MP3 players. Price: $99 Available at: NCIX.com;  Source by Circuit City; Wal-Mart