Change samplerate of multiple OGG files?

Hello, guys. Title is clear.
I need to change samplerate of more than 700 OGG files. I need to converto from 16 kHz to 44.1 kHz.
Is there a way? Can you help me, please?

An easy and convenient way is with OggDropXPd.
See this page for details of this and other options:

Please note that re-encoding the files will reduce the sound quality a bit.