This is the same problem that is documented by DOMINO under the thread "Media
Player 11".  MP11 will rip 0ne CD and then dies.  Like DOMINO, I've tried
everything I can think of doing.  Once the CD is ripped and you insert the
next, MP11 reads it a an unknown CD and then goes into a "Not Responding"
state.  The funny thing is that MSN also goes into a "Not Responding" state.  
As DOMINO stated, the only solution is to restart.  Now, Domino posted his
thread last year.  There hasn't been an answer.  Isn't anyone having this
problem?