ITunes Stops Playing Partway Through a Song, but Isn't Paused

Question

First, the short version of the problem.  iTunes will stop partway through a song (not at the same place each time and it happens with any song) but it doesn't pause the song, it looks like it is playing, the icon in the library shows that it's playing, and the play/pause button shows 'pause' (as in it is playing now so the button turns to the 'pause' button) but yet the song isn't playing and the song track bar isn't progressing.
Now on to what steps we've tried that haven't work.
1) Reinstalling iTunes
2) Moving the music library to another hard drive
3) Uninstalling iTunes, re-installing, and then only loading 1 song in
4) Reinstalling Windows
Here's a bit more detail on the problem.  Movies play in iTunes with no problems.  We can sync an iPhone and an iPad with no problems.  When the song stops playing, hitting the pause button and then hitting play again, even repeatedly, doesn't do anything - the song still doesn't play.  Double clicking on another song to start it playing doesn't work.  Oddly enough, double clicking on several songs in quick succession out of frustration does sometimes (but not always) start one of those songs playing but it too will eventually stop playing in the same way.  Songs generally stop at around 20-30 seconds but some get over a minute  and on rare occasions a couple songs in a row will play before a song finally stops playing.  This problem started when we added another hard drive to this computer and moved the music library for one hard drive to another - thus the suspicion that moving the music library back where it was or to some other hard drive might help.  Even with a fresh install of Windows and iTunes with just one song (in its usual place under My Music on the C Drive) still have this problem.
I'm at a loss as to what to even try next.  Anyone else ever have a similar problem?  Any ideas on what could cause such an odd problem?

Answer 1

This was happening to me since I updated to itunes 10. 
Here's a solution I found and so far, it seems to work.
• quit itunes
• Go to your user finder > library > preferences
Drag the following 3 files to your desktop:
• com.apple.iTunes.eq.plist
• com.apple.iTunes.plist
• com.apple.iTunesHelper.plist
Restart your computer. Restart itunes. You can trash the 3 files you dragged to your desktop.
So far this has been working for me.
If it didn't work, trash your itunes folder and reinstall with a clean copy of itunes downloaded from Apple.
Good luck.