memory error when preparing .WAV file

[deyzel]

I inherited a software product that plays wave files. Written in Borland C++. After a number of days of constant message playing I get the following error when waveOutPrepareHeader is called: MMSYSERR_NOMEM:Unable to allocate or lock memory.
I don't see any obvious memory leaks and the systems resources does not go down.
The system needs to be restarted to resolve this, it does not help to just restart the application.

Any ideas how to resolve or work around this??

Thanks