Hard to say based upon that small set of information. Sounds like something
is overwriting some reg key... ? You could take a registry snapshot when
it's working and then the next day when it's not and compare the two. Or
can you repro this by just shutting down the player and restarting it?

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(speaking for myself and doing this in my free time)
See http://zachd.com/pss/pss.html for some helpful WMP info.
This posting is provided "AS IS" with no warranties, and confers no rights.
Now Playing: "Technologic" by "Daft Punk" in WMP10.
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"Selby" <Selby@discussions.microsoft.com> wrote in message
news:B6A49096-BA01-4809-A9A2-01D3BB27D60B@microsoft.com...
>I run Windows 2000 with WMP 9.00.00.3250. I listen to radio on it. Works
>fine
> all day, I don't turn off the computer, and when I come back the next day
> Media player says it can not find the file name/path. I then reinstall MP
> and
> it works fine. What is the problem?