That's the problem with WMP, it requires xtra codecs to help u to play audio & video material. And yes, Microsoft is full into licencing. There's better players out there. For xtra codecs u can try:
http://nimo.titanesk.com and also see the following thread for some points:
http://www.gnutellaforums.com/showth...=&postid=96293
Hope this helps.
As far as your 2nd question goes, it depends what type of file it is. If it's a zip file use winzip. Drag & drop it onto the app. Oh and check the size of the file first before u download it. If it is very small, then it's probably serials or notes. The larger ones are the apps. Do a search using Programs, not a Any Type search. Just click the Prog search tab before u search.