"the songs in this playlist will not fit" - only 63 minutes in playlist????

Question

I'm trying to burn a 63 minute playlist onto an 80 minute CD.
I do this many, many times a week.
However, with this playlist [16 tunes ripped off CD and one purchased track from iTunes - never burnt to CD before] I get the "the songs in this playlist will not fit" error message.
If I remove a song from the playlist, I get the same error message.
iTunes is burning other / longer playlists just fine.
Any tips, please?
Thank you for your time!

Answer 1

Yes it will have a larger amount of data but it is
also a larger file.
Figure that 1 minute of 128bit rate is equal to about
1 meg - 1 minute at the 1411 (audio) bit rate is
about 10 meg.
So - 70 meg of mp3 is about 700 meg of audio (AIFF)
format.
MJ
Well, that would only be true if you were burning a DATA or an MP3 disk. All audio files are converted to CDA format (not AIFF) before burning to 16bit PCM @ 44.1KHZ sampling rate. This is an absolute, or they will not play in an audio CD player.
By the way, the reason that some people get a bit confused by the "700mb data or 80minutes of Audio" has a lot to do with how the disks are written:
Audio sectors use 2352 bytes per sector, while standard CD-ROM data uses 2048 (the rest is for error correction). You can put roughly 747MB of audio onto a disc that only holds 650MB of data (74 Min disk), or 804Mb on a 700Mb disk, hence the 80minutes @ 10meg per minute. The number of tracks (and hence track gaps @ 2sec each) will have a minor effect on total music playing time.
There IS, however, something seriously askew with iTunes and the interface to burning any kind of disk. I have seen the same problem a few times and most of the time, renaming the playlist (for whatever reason) has solved the problem. It has been well documented on this board that itunes cannot record at high speeds any longer, and my 100% success rate speed is a mere 2x on both CD's and DVD's.
I have also seen the capacity issue show up OUTSIDE of iTunes using FlashDrives. While the OS doesn't have a problem reading data from the drives, nor does it have difficulty in acertaining the capacity of the drives, it will not write anywhere close to the capacity of the drive. Currrently affecting all 3 systems here.
iMac G5, Mac Mini, Powerbook G4   Mac OS X (10.4.8)