Let's bring this thread up to date. The title certainly works.
I bought the VentureMP3. It arrived in less than two weeks, with seems pretty good for an item coming from Spain.
Installation was a breeze. Sure, it requires removing the seats, tank, and splitting the fairing, but that really goes without saying for a stereo part that's mounted in the trunk. I plugged the included wire into the CD connection from the stereo and it works just fine. There's even a nice heavy pass-through plug included for the hole in the bottom of the trunk. I see no reason it wouldn't work for those with the CD in the side bag.
There is a switch on the wire next to the player to control power during long term storage. I believe this is a result of the nature of the Clarion CD that Yamaha used. I am planning on bypassing the switch with a relay wired under the seat and controlled by switched power to remove the need to worry with the mechanical switch at all. When I add the relay I'll take pictures and do a write-up of the whole thing.
The player has worked well so far. SpanishVenturer recently sent me an email regarding stripping the ID3 tags that are sometimes found in MP3 files. He has windows based software available to help folks remove the tags. (I don't do Windows, so I'll be doing it on my own - common issue as I'm a hard core Linux nerd.) There has been an occasional hang with the songs I've put on the card. I suspect removing the ID3 tags will remedy that since there have been a number of devices that simply don't like the tags. Once I convert my music files, most of which are in Ogg Vorbis format, I won't have any tags to worry about and will be able to do a better test of the device.
All in all I'm very happy. The device is much smaller than the CD player. Does not skip. The occasional hang can be remedied by a press of the up/down control on the audio head, so even that is quite livable. The SD card can hold a lot of music, and it can also use a pen drive, though I believe it's a one-at-a-time sort of thing. It's controlled by the audio head as if it were the Clarion CD player it replaces.
After several years of empty talk from Pete in Florida (I'm not mad at him, we're not really a large market.), SpanishVenturer has gotten the job done! Thank you very much, sir!
(Oh, and SpanishVenturer, welcome to VentureRider.)