(Lenght field) It's by XMPlay design. It shows length of currently playing subsong. If you want total length then see the playlist.
Oops, sorry about that. I did not know.
(By the way, Delta.sid #10 crashes XMPlay!!! That is critical, I cannot listen the #12!!!)
It doesn't happen here. But I see some strange things going on in the STIL view. Try disabling STIL and check if XMPlay still crashes.
Yay! Delta does not crash when STIL is switched off! (To be honest I was a bit worried for a while.)
It seems that most of the memory problems are STIL-related. Here's updated numbers with different configurations:
Memory usage with no STIL & yes SLDB:
Sid Cold Next Min/Max
------------------------------------------------
Mysteriously.sid 34328 Kb 21600 Kb 2388 Kb
Delta.sid 34212 Kb 7948 Kb 2124 Kb
Axel_F.sid 34220 Kb 3276 Kb 2460 Kb
Memory usage with no STIL & no SLDB:
Sid Cold Next Min/Max
------------------------------------------------
Mysteriously.sid 3560 Kb 2648 Kb 2336 Kb
Delta.sid 3418 Kb 2500 Kb 2584 Kb
Axel_F.sid 3448 Kb 2528 Kb 2616 Kb
Again:
Cold - XMPlay is started with SID
Next - SID is played as next song on the playlist
Min/Max - XMPlay is minimized/maximized while playing
By the way, LaLa has made an already debugged & portable STIL class for free use:
http://www.transbyte.org/SID/STILView.htmlSmart kid, good programmer. Why not consider using it?

The only thing that doesn't fit the STIL pattern is the (appropriately named) Mysteriously.sid. Why does it use 20Mb (3 min song, no STIL & yes SLDB), when Delta.sid uses only 8Mb (15 minutes monstrosity, no STIL & yes SLDB). I have no Windows developement tools, so I am unable to dig deeper on this...
Anyhow -- Thank you for your quick and thoughtful answers. You are doing a good job.