Dont bother with these branded PC's, they are overpriced and would leave you feeling ripped off.
Take a look at the spec sheet on the page you posted, now go to ebuyer and find something with the same spec for half the price. Then, with all that money you saved being a savvy shopper, go any buy a proper external soundcard and a pair of monitor speakers.
Any one of the newer PC's with a Core i5 or i7 with 4GB of ram will chew up all the production you can throw at it without issue.