GetPosition blocks forever if you hit a breakpoint (and then continue) about naudio

[markheath]

if you look at the stack trace, where is it blocked? Is it in the call to the underlying API, or is something hanging on to the lock?

[sciencectn]

Looks like it gets stuck at this line:
MmException.Try(WaveInterop.waveOutGetPosition(hWaveOut, out mmTime, Marshal.SizeOf(mmTime)), "waveOutGetPosition");

This also happens randomly from time to time without breaking but I haven't been able to reproduce that.

Here's a screenshot of exactly where it is in WaveOut.cs:

[markheath]

have a look at all the other threads. Are any of them inside a call to a waveOut function, or waiting on the waveOutLock? Also, what callback model are you using? Have you tried with WaveOutEvent?