Why don\'t DVD-R based players exist? 2002-08-22 01:34:59 Here's something interesting to ponder. . . while I was wondering how many more mp3's I could fit on a 99-minute CD-R as opposed to an 80, it struck me that I have not seen a single portable device that supports the DVD-R format. This could be due to the fact that not many people have DVD-R/W writers yet, but that is changing. Imagine a DVD-R compatible Slim-X that would hold 4.7GB of music. . .at --aps, that translates into 50 hours of audio (assuming 85MB/hour) or God forbid, over 100 hours at some lowly bitrate (or, 7 hours of uncompressed PCM for the purists). Why hasn't any manufacturer thought of this yet, or have they? The same physical unit could be used, with a different laser assembly (640nm, of course) and different firmware, which would also be backwards compatible with CD if an AGC circuit was added. So. . .is this unthinkable, or just a matter of time??