Add an start pos switcher

[Dudepro1237]

And fix speed hack not working properly

[FireMario211]

i have no idea how to do your 2nd request, because how am I supposed to fix something if you aren't telling me exactly what's not working about it?

[Dudepro1237]

Speedhack Music not working properly

[tulpenkiste]

Speedhack Music not working properly

Are you saying that the music is out of sync with the speedhack? If so, I have 1 question: do you have vsync on? (If you do, its caused by that due to it making GD a big laggy (Resulting in audio desync))

[qwasx123]

Yeah startpos switcher (especially for Mac) is a game chamger