Greetings awriternot,
While I've never had this issue, there is a setting in Power Amp for this problem.
1. Press menu in power amp to get to settings
2. Select settings.
3. Choice audio
4. Select advanced tweaks.
5. Select audio buffer size.
6. There are a couple of settings you can choose.
a. Auto
b. Large
c. Huge
I think auto is default. Try one of the other settings to see if this fixes your problem
Hope this helps