This is a pdf of the tee...

http://www.ringewald.com/DRM-tee.pdf

Update from us at Amazon:

I've tested this last night with about 500 files from our service, with mpd (not mt-daapd). No problems whatsoever. For reference, it was:

- Debian 4.0r2 (2.6.18-5-686)
- mpd 0.12.1

mpd was installed using standard apt-get install.

Perhaps there's really something funky with DownDB's particular setup of mpd/Linux? Has this problem been observed by anyone else?

Our files do contain both ID3v1 and v2 tags, but this should not be an issue.

I'm going to consider us off the hook on this...

OK. Full disclosure: I work at Amazon. Plus I work on the MP3 development team.

I apologize in advance for the response from Amazon customer service. Don't know exactly where their info came from (they're usually totally on top of things), but we don't use "proprietary" anything. "Crazy-ass" sometimes, but not proprietary.

We worked very hard to make sure the tag info we place in the MP3 files works everywhere (don't get me started on how different programs choose to interpret the "Ensemble" tag). Up till today we were doing pretty well; no complaints at all.

Obviously we've optimized the tags to work best with iTunes and, ahem, WMP, but they should work everywhere. If you've got any more detail around what might be confusing mpd and mt-daapd, post away. In the meantime, I'll look into it.