21345681 87––Compression formats(Recommendation: “Points to remember when making MP3/WMA fi les” on the previous page)Compression method Bit rate VBR Sampling frequencyMPEG 1 audio layer 3 (MP3) 32 k – 320 kbps Yes 32, 44.1, 48 kHzMPEG 2 audio layer 3 (MP3) 8 k – 160 kbps Yes 16, 22.05, 24 kHzWindows Media Audio Ver. 7, 8, 9* 32 k – 192 kbps Yes 32, 44.1, 48 kHz* WMA 9 Professional/LossLess/Voice are not supported.Folder selection order/fi le playback orderMaximum number of fi les/folders Maximum number of fi les: 511 (fi les + folders) Maximum number of fi les in one folder: 255 Maximum depth of trees: 8 Maximum number of folders: 192 (Root folder isincluded.)Note: You can shorten the duration between data read andplayback by decreasing the quantity of fi les or folders,or the depth of the hierarchy. This unit counts the number of folders irrespective ofthe presence or absence of an MP3/WMA file. If the selected folder does not contain any MP3/WMAfi les, the nearest MP3/WMA files in the order ofplayback will be played. Playback order may be different from other MP3/WMAplayers even if the same disc is used. “ROOT FOLDER” appears when displaying the rootfolder name.Recording MP3/WMA fi les on a CD-media You are recommended to minimize the chances ofmaking a disc that contains both CD-DA files andMP3/WMA files. If CD-DA fi les are on the same disc as MP3 or WMAfi les, the songs may not play in the intended order,or some songs may not play at all. When storing MP3 data and WMA data on the samedisc, use different folders for each data. Do not record fi les other than MP3/WMA files andunnecessary folder on a disc. The name of an MP3/WMA file should be added byrules as shown in the following descriptions and alsocomply with the rules of each fi le system. You may encounter trouble in playing MP3/WMAfi les or displaying the information of MP3/WMAfi les recorded with certain writing software or CDrecorders. The fi le extension “.mp3” or “.wma” should beassigned to each fi le depending on the fi le format. This unit does not have a play list function. Although Multi-session recording is supported, theuse of Disc-at-Once is recommended.Supported fi le systemsISO 9660 Level 1/Level 2, Apple Extension to ISO 9660,Joliet, RomeoNote:Apple HFS, UDF 1.50, Mix CD and CD Extra are notsupported.Root Folder(Root Directory)Folder SelectionIn the orderFile SelectionIn the orderTree 1 Tree 2 Tree 3 Tree 4 Tree 8(Max.)English109109