It doesn't bother much, but i have the same... I notice it especially at low volume (the clicking becomes more notable) and in town due to the increased walk speed.

what sound card do you have?

i;ve tested on my work laptop.. and it sounds ok.
so the problem is OpenAL on Audigy2

every sound that plays produces a small click/pop that becomes very annoying when walking in town at increased speed.

i have SB audigy2 sound card (on windows 7)

any ideas on how to fix this?