static, clicks, pops, stutter when playback using groove~ to play aif files

Hi there,

I created a simple stripped down sampler following the ideas in MSP tutorial #20.

It works exactly as I wanted - EXCEPT... the playback starts off fine, but within a few seconds I get pops, clicks, or stuttering sounds.

The code is below.

At first I thought the problem was the division of the incoming note over the base note that adjusted the playback rate. But, wired up with only direct 1.0 sig~ and still did not work.

Am I doing something wrong?

Wasn't sure how to upload the pitches, used so put them in a zip file here:
http://peacesong.org/cycle74stuff/pitches.zip

Thank you for feedback and help,
Peacesong