The medium formats supported by the radio are ISO 9660 Level 1 and Level 2 and includes the Joliet extension.

When reading discs recorded using formats other than ISO 9660 Level 1 and Level 2, the radio may fail to read files properly and may be unable to play the file normally.

UDF and Apple HFS formats are not supported.

The radio uses the following limits for file systems:
• Maximum number of directory levels: 8
• Maximum number of files: 255
• Maximum number of folders: 100
• Maximum number of characters in file/folder names:
• Level 1: 12 (including a separator . and a threecharacter extension)
• Level 2: 31 (including a separator . and a threecharacter extension)

Multisession disc formats are supported by the radio.

Multisession discs may contain combinations of normal CD audio tracks and computer files (including MP3/ WMA files). Discs created with an option such as keep disc open after writing are most likely multisession discs. The use of multisession for CD audio or MP3/ WMA playback may result in longer disc loading times.

If a disc contains multi-formats, such as CD audio and MP3/WMA tracks, the radio will only play the MP3/ WMA tracks on that disc.