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We were talking in #joiito about wanting to play music for each other, but not being able to just post urls to our mp3's for fear of vexatious prosecution.



So here's my initial straw man suggestion for how to do this.



1. create a new playist format that refers to songs by a canonical naming scheme - MusicBrainz has a good starting point. These get put in URI's that look something like:



songid:66fea472-0093-4764-a574-7ef87ade4433?artistid=d1601842-8052-4ac1-81ef-67e8259250dd&artist=Shannon%20Campbell%20and%20Scott%20Andrew%20LePera&title=Nothing%20New



How does one resolve this URI?



Implement an app that tries several alternatives:

1. Is it in the local music collection?

2. Is it available on a label or artist website/bittorrent?

3. Is a promotional extract up on Amazon or iTunes store?

4. allow further plugins



In each case the name/title are used for an initial match, and the sing identification process defined by MusicBrainz used to be sure we have a real match.

Bill Rosenblatt :





Remarkably honest reporting by DRM Watch here. The DRM 'Industry' has a vested interest in destroying the free transmission of information over the public internet in favour of closed, restricted networks.

Glenn Reynolds, assorted Slashdotters and Peter Lewis at Fortune are speculating on whether Ansel Adams would have used digital cameras.



As I worked on the first official release of Ansel Adams images in digital form - the Ansel Adams screensaver - I feel somewhat qualified to pontificate on this.



What everyone is missing is that it is not a question of resolution, but of dynamic range.

With film the issue is blurred by questions of grain, but with digital the problem is which image format to use.



TIFF supports more than 8-bits per channel, but JPEG does not, nor do most computer displays. Most digital cameras only generate 8-bits per channel of dynamic range, and are still competing on resolution.

On the other hand, even the $30 scanners do 12-bits per channel these days, and 14-bits per channel (42-bit) are only about $50.



I expect that digital cameras will pick up on this soon, but we'll need a file-format change (and possibly a better transient storage device than flash memory) and new low-cost software to make it mainstream. Ironically, all the sophisticated exposure calculation that makes many digital cameras too slow to use for action snapshots could be reduced if they upped the dynamic range a few stops.



If you want to see what kinds of dynamic range digital photography is really capable of, have a look at the Hubble images, where every photon is carefully counted.

Down on the right is my del.icio.us linkblog. Its a bookmark replacement, and a place to find great links, as you can see other people's links and categories too.

Steve Jensen Jenson:

I came up with an idea on the train recently that might be useful here: If you're given the right bytes and told where they should go, you can construct the right document. HTTP does have semantics for giving you bytes and where they should go.

Steve, there is an existing HTML RFC for sending diffs that is perfectly suited to this - RFC3229. I mentioned this when it came out in Jan 2002.

Although the economic argument is more powerful - that DRM destroys value for customers and hence will be shunned by them - the technical argument is strong too.

This rests on one of the fundamental pillars of Computer Science - the Church Turing Thesis that states that any computer can emulate any other. When this is combined with the continual improvement in computing power available, it means we will always be able to run old software, or indeed protected software, by emulating the environment it runs within.

Simson Garfinkel describes how emulation saved the BBC Domesday Project, the authors of which I worked with at the BBC and the MMC.



"But that wasn't DRM" I hear the cry, "just obsolete hardware and data formats".



How about a systematic program that defeats the hardware protection for pay per use interactive experiences that works in a general enough way to encompass 25 years worth of hardware design?



It's called MAME and it has just been ported to the Nokia N-Gage cellphone/game gadget. It has emulators for various CPUs (and graphics and sound chips) to run the code directly from the original game ROMs - they look and feel just like the real thing

If Nokia are smart they will license this and the games and use it to promote the gadget - this company has licensed Atari ROMs for sale. After all, those 80s games are smaller than most MMS photos that get sent, and they're lots more fun than ringtones.



I hope Ed Felten and maybe can explain this to the assembled lawyers at the Berkman conference today. Most of them seem to like on compulsory licensing schemes.

I wish I had been able to take the chance offered to join them and present mediAgora to them. I look forward to reading the blogging of the event.



Here's a cartoon I made with the wonderfully silly Bayeux Tapestry Construction Kit

Tim Oren takes me to task for saying Dave invented outlining. Now I could go on about the long history of simultaneous or convergent invention in history, but I won't, I'll just say this.



Tim - you're in VC. You should know the difference between a demo and a product.