it took me precisely 4 seconds to find this link:

http://www.bobpegg.com/nupage1.htm

the page has a phone number and postal address.

So you now know where to post the cheque that will enable you to enjoy the album you have downloaded even more, knowing that you have reimbursed the maker of it for the time, effort and, therefore, money he invested in it.

Of course, as every good anarchist knows, there are plenty of currencies besides money. You could always offer him another service, such as washing his windows. Or perhaps even proselytising to the unconverted on websites such as "Time Has Told Me" about the necessity of paying people for nice things they have done for you, or about how the word "free" has been hijacked by a generation of passive consumer-capitalist couch-potatoes to simply mean "taking everything you want and never giving back anything at all".