Hi Ian,

Ronnie mentioned that I did some tests, this is what I did on the 13th of Feb 2012.


Sooloos System: C15, TwinStore, ControlPC all running software version 2.368
Album used for test - Birdy by Birdy

Sooloos Debug used to save all existing Sooloos artwork to PC folder (#1 from debug)
cover.jpg 1000x1000 778 Kb Birdy
cover_img02resize170.jpg 0170x0170 19.9 Kb Birdy
cover_img02resize256.jpg 0256x0256 24.6 Kb Birdy
cover_img02resize512.jpg 0512x0512 48.2 Kb Birdy

ControlPC used to update artwork from Birdy.jpg 1000x1000 image to AmyMacDonald.jpg (1000x1000) image
Save button pressed.
ControlPC shutdown.

Sooloos Debug used to save all existing Sooloos artwork to PC folder (#2 from debug)
cover.jpg 1000x1000 486 Kb Amy MacDonald
cover_img02resize170.jpg 0170x0170 19.9 Kb Birdy !!!
cover_img02resize256.jpg 0256x0256 24.6 Kb Birdy !!!
cover_img02resize512.jpg 0512x0512 48.2 Kb Birdy !!!

Start ControlPC
View Birdy album details
Artwork displayed is 1000x1000 is Amy MacDonald (as expected)
Play track, small icon (top-left) is Amy MacDonald (as expected)

Control15
Main 6.3 Screen: is Amy MacDonald (as expected)
Album Info Screen (Small icon right): is Amy MacDonald (as expected)
Album Info Screen (Medium icon right): is Amy MacDonald (as expected)
Album Info Screen (Large Pop up): is Amy MacDonald (as expected)
Screen saver (large): is Amy MacDonald (as expected)

Reboot Contro15
Debug files no change
Screen Images no change

Reboot TwinStore
Debug files no change
Screen Images no change

Conclusion
The smaller jpg files are not updated when the album art is updated by ControlPC
The smaller jpg files are not used by ControlPC or Control15

Speculation
The smaller jpg files might be for use by iPad, iTouch apps or they could just be redundent.
However, if redundent why the new 170*170 pixel file?
I don't have any Apple devices to test with (I'm waiting for the iPad3).

So no surprises over and above what we already knew with these observations. I�ll pass on to [a dealer] and ask him to investigate further with Meridian.

Regards,
Carl

861v6+ID40, HD621, 8000.2, 7200HC, 7200.2, SKYQ Silver, PS3, PDP-LX6090, QNAP TS870-Pro (8*6TB), Roon, iPadAir2.
[In Reserve] C15, MD600 (2*3TB), TwinStore RM (2*2TB)