Choppy System Sounds

Hello All,
I am running asterisk with FreePBX on Ubunutu 8.04 LTS

Everything is working great I am running it SIP only and the call quality is wonderful. But for some reason all the system’s recordings sounds choppy and garbled.
The VM recordings sounds good and the names recorded sound good. Its just the internal sound stuff.

Everything is recorded in gsm using the default sounds from digium.

Any help is greatly appreciated!

Try using wav format instead