I agree 100% with Doobie. DAP is loaded with spyware. I tried it out awhile ago, and wow. Spybot and Adaware went crazy.
You may also want to add
iTunes to the list as well. Not only can it be used to play Audio files, but can also rip, burn, and encode. As well as access the CDDB, so you don't have to manually type in all the info when you rip one of your CD's.