rock-star_79, i know the firmware you are refer to. In the post you speak of I mentioned the biggest downside to that particular firmware was that the background image did not change from menu to menu so things like iPod menus and most of the other themes are out. You can still mod them with a new background image and feature icons. There are 2 themes for this firmware here
http://www.mympxplayer.org/change-te...and-df243.html
http://www.mympxplayer.org/castlevan...eme-df224.html
The song shuffle delay is a pain but there is no way to change this. I do recall a member posting that he was able to speed his player up slightly by using 16bit images in the firmware as apposed to 24bit. This puts less demand on the cpu so it becomes alittle more responsive but I can't confirm this.