Now no ding new to this I don't think 60 WATT is allot is it?
But it's not ment for giving its like a portable dj rack for tiny events in small rooms, my theory is that some powerful computer speakers with a good subwoofer would do the job, am I correct?
The quality won't be great, but it should do for general listening and computering.
On a side note:
Wattage isn't really the best way to look at speakers anymore, because of more efficient amplifiers and power handling. Generally, 60watt in old money is a plenty loud, but in new money with smaller speakers isn't anywhere as good.
Most speakers that are similar to the ones you linked aren't bad, but they're more hi-fi in the quality they reproduce. They do take up more space and sometimes require a power amp (labelled as 'passive').