See also:

Supported MP3 File Formats
The radio will recognize only files with the *.MP3 extension as MP3 files. Non-MP3 files named with the *.MP3 extension may cause playback problems. The radio is designed to recognize the file as ...

General Information
The Sentry Key system complies with FCC rules Part 15 and with RSS-210 of Industry Canada. Operation is subject to the following conditions: • This device may not cause harmful interference. • ...

Playback of MP3/WMA Files
When a medium containing MP3/WMA data is loaded, the radio checks all files on the medium. If the medium contains a lot of folders or files, the radio will take more time to start playing the MP ...