Sony CDX-GT41UW Operating Instructions - Page 14

About USB devices • Mass Storage Class and ATRAC Audio Device type USB devices compliant with the USB standard can be used. However, this unit cannot recognize USB devices via a USB HUB, and is not compatible with devices that have a HUB function. For details on the compatibility of your USB device, visit the Sony support website (page 19). • Corresponding codec is different according to device type. - Mass Storage Class: MP3/WMA/AAC - ATRAC Audio Device: ATRAC/MP3/WMA/ AAC • DRM (Digital Rights Management) files other than ATRAC cannot be played. • Displayable data are as follows. Mass Storage Class: - Folders (Albums): 512, Files (Tracks): 65535 ATRAC Audio Device: ATRAC/MP3/WMA/AAC - Albums/Artists/Playlists: 65535, Tracks: 65535 Notes on USB devices • When using a cable, use the one supplied with the USB devices to connect. • Do not use USB devices that are so large or heavy that may interfere with driving operations. • Do not leave USB devices in a parked car, as malfunctions may result. • It may take time for playback to begin, depending on the amount of recorded data. • Backup of data in USB devices is recommended. Playback order of MP3/WMA/AAC files MP3/WMA/AAC Folder (album) MP3/WMA/ AAC file (track) About MP3 files • MP3, which stands for MPEG-1 Audio Layer-3, is a music file compression format standard. It compresses audio CD data to approximately 1/10 of its original size. • ID3 tag versions 1.0, 1.1, 2.2, 2.3 and 2.4 apply to MP3 only. ID3 tag is 15/30 characters (1.0 and 1.1), or 63/126 characters (2.2, 2.3 and 2.4). • When naming an MP3 file, be sure to add the file extension ".mp3" to the file name. • During playback or fast-forward/reverse of a VBR (variable bit rate) MP3 file, elapsed playing time may not display accurately. Note on MP3 If you play a high-bit-rate MP3, such as 320 kbps, sound may be intermittent. About WMA files • WMA, which stands for Windows Media Audio, is a music file compression format standard. It compresses audio CD data to approximately 1/22* of its original size. • WMA tag is 63 characters. • When naming a WMA file, be sure to add the file extension ".wma" to the file name. • During playback or fast-forward/reverse of a VBR (variable bit rate) WMA file, elapsed playing time may not display accurately. * only for 64 kbps Note on WMA Playback of the following WMA files is not supported. - lossless compression - copyright-protected About AAC files • AAC, which stands for Advanced Audio Coding, is a music file compression format standard. It compresses audio CD data to approximately 1/11* of its original size. • AAC tag is 126 characters. • When naming an AAC file, be sure to add the file extension ".m4a" to the file name. • During playback or fast-forward/reverse of a VBR (variable bit rate) AAC file, elapsed playing time may not display accurately. * only for 128 kbps Note on AAC Playback of a copyright-protected file is not supported. 14