Help, music problem (wmp 11 vista, zune)

Hello, I have an extemely annoying problem.  Imagine every time you tried to play a sound file, you had to wait at least FIVE whole seconds before it started playing and if you had a playlist, ever song would start skipping five seconds before it ended... Well dont have to imagine that. 

As far as I can tell, the problem is only w/ wmp11 vista and zune, I only used one other player to test (zoomplayer).  When I change songs, its hangs for at least five seconds when "media changing" is shown in the lower left corner, I have no idea what it causing this but I know that it shouldnt take more than 1 second to start playing a song.

 My current pc was upgraded to vista, it didnt come w/ it.   Thanks in advance, I hope I can get this straightened out.:cry:

i hav vista but my problem is different. while im playing music in wmp11 it randomly decides to play out of any combination of my 5.1 speaker setup. never consistant and always annoying.blazethe1