As pointed out by Horace, the new version has configs with the savestate. To be honest, does it matter it the menu music of a game is to fast, aslong as the game itself is ok? If you want to listen to the menu music, setup the options to make it run nice.
I spent alot of time making the new states, to run perfect while running games (might go faster in menu`s etc). Its acceptable, in my opinion. We know what you are on about, and its being worked on, think you would be more cheesed off, if PSPUAE sat there for a year with no updates at all.
Please be paitent, fedup of saying this, but we are buzzing with ideas and how to get better speed and sound. We are also in contact with each other, to discuss new things and how to improve it. Dont forget, WinUAE took a very long time to reach where it is now.
When the new State DB goes online, please try some of them, as they are setup for optimal gameplay, not menu music or loading screens.