Multimedia Timer for the .NET Framework

Omer van Kloeten wrote a post pointing to Leslie Sanford's implementation of a very accurate timer for .Net:
The Win32 multimedia timer services provide the greatest degree of timing accuracy. They allow you to schedule timing events at a higher resolution than other timer services.
This can be useful in a multimedia application where timing accuracy is of utmost importance. For example, a MIDI application needs timing events that are as finely grained as possible.
Unfortunately, the Win32 multimedia timer is not part of the .NET Framework. However, by using the .NET interoperability services, the multimedia timer can be brought into the .NET fold.

You can find the code here.