G.J.Tielemans at dinkel.utwente.nl wrote:
> High Mark,
> 
> I like your living book about music, it is a nice example of an activ essay.
> 
> I gave it a try under NT. Starting a tool works OK, but when I go to another
> page and try to use another tool I get this Squeak message (twice): The
> specified device is already in use. Wait until it is free, and try again. I
> can asure you: Wait does not help. (Reloading the project by pressing the
> reload button of my webbrowser -waiting - and then going to that page -
> starting from the first page again - is a workaround, so waiting does help
> at the end, but.. 
>

For information I got the same problem in NT 4.0 SP.5, Squeak 3.0 #4325.
To replicate:
-go to the 'Fun with Music' project,  play the ScorePlayer and after
that, try the following

MIDIFileReader playURLNamed:
		'http://squeak.cs.uiuc.edu/Squeak2.0/midi/wtellovr.mid'.

you'll end up with the same message: 
 'The specified device is already in use. Wait until it is free, and try
again. '

ant I second this 'I can asure you: Wait does not help.'

Raymond