> The problem is, the latest version of Csound barfs around 1.47 seconds into
> a 30 second render, and tries to access some memory that doesn't exist.
> 
> Is there a practical limit on the number of events in a score file? Or is
> this some other problem?

I have a piece which uses your method
to combine short clips of a cello sound
at various tunings.  This is about 7700
lines long, and runs fine on csound3.44
under Linux with 32Meg.