You've been chipmunked! Sometimes the Macromedia Flash player has a hard time dealing with files that are encoded at a rate that is not a multiple of 11.025 kHz. The result is what we call the chipmunk effect. When you download the file, it will play normally on your computer or device. Note: To avoid being chipmunked, encode MP3 at 11.025 22.05 or 44.1 kHz.