Date: Sun, 17 Mar 2002 09:58:51 +0800 From: Raymond <[EMAIL PROTECTED]> Subject: Re: making MP3s to fill my new HDD [LIB]
At 07:56 AM 16/03/2002 -0800, you wrote: >Date: Sat, 16 Mar 2002 22:46:56 +0700 >From: [EMAIL PROTECTED] >Subject: Re: making MP3s to fill my new HDD [LIB] > >>> Now - if I can just find a way to persuade Win'2K (not 95/98) to *see* >the >>> "real" files on the CD... "substitute-CDFS.VXD-substitute" for Win'2K, >>> anyone? >> >> THERE ARE NO REAL FILES ON AN AUDIO CD!!!! > >:-) > >That was the intended implication behind describing them as "real" files. >I didn't mean real in a PC/DOS/whatever sense, I meant "real files" as in >"album tracks". >"the actual data" then - is that a better description? *sigh* OK I think we're having a little trouble understanding EXACTLY what DAE (digital audio extraction) is. There are 2 ways of getting audio data off a CD. The first way is the way your CD player program does it. It looks at the CD-ROM and identifies the tracks (perhaps giving them .cda handles so you can see them as well). It then sends a HARDWARE INSTRUCTION (note, NOT a file system instruction) to the CD-ROM drive requesting that it go into audio mode and play the desired track. The CD-ROM drive flips into audio mode and plays the track THROUGH THE AUDIO CABLE. Thats why if you forget to plug the audio cable from the CD-ROM drive into the CD in on the sound card you'll be able to control the drive and read data but you can't play CDs. This is also why when an audio CD (with an initial bonus data track) is playing, you can't use Explorer to view the data (at least not without the audio stopping). The SECOND way of getting audio data off an audio CD is to use DAE or Digital Audio Extraction. This is a HARDWARE feature of the drive, some drives have it some drives (very few nowadays) don't. This is the most common mode that ripping programs use. The program sends a command to the CD-ROM drive, putting it in DAE mode then the drive dumps the track as raw data as fast as it can out the data cable. Note that this is a bit like reading a raw partition. Also note that this is FILE SYSTEM INDEPENDENT ie. NO FILES ARE INVOLVED. Think about it THIS way. Your hard disk drive can be mapped and you can extract data off it over the network. Can you access the drive's SMART status through that mapped drive? Can you defragment the hard drive or perform a scandisk through the mapped drive? (Ya I know Windows 2000 you can do these things remotely but that happens through a separate communications channel ... hell you could even shut the computer down completely under 2k remotely). Same with DAE for the CD-ROM drive. Without a special driver to handle the hardware stuff on the computer with the CD-ROM drive you won't be able to do it. If you want more info, visit http://www.roxio.com/en/interest/music/aboutdae.html (Roxio being the software company that was spun off from Adaptec). *phew*! - Raymond --- /~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\ | | "Does fuzzy logic tickle?" | | ___ | "My HDD has no reverse. How do I backup?" | | /__/ +-------------------------------------------| | / \ a y b o t | [EMAIL PROTECTED] | | | HTTP://www.raybot.net | | ICQ: 31756092 | Need help? Visit #Windows98 on DALNet! | \~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~/ ************************************************************** http://libretto.basiclink.com - Libretto mailing list http://libretto.basiclink.com/archive - Archives http://www.picante.com/~gtaylor/portable/faq.html - FAQ -------TO UNSUBSCRIBE------- Reply to any of the list messages. The reply mail should be addressed to: [EMAIL PROTECTED] - Then replace any text on the message's subject line: cmd:unsubscribe --------TO UNSUBSCRIBE DIGEST------ Do above but with this on subject line: cmd:unsubscribe digest **************************************************************
