A simple PSX2PSP convert nothing special there done, then with the cdda enabler installed and pops loader also installed using Pops 6.20 I think I used it works perfect
even without the CDDA enabler installed it will work just no cdda is played
What step is failing you???
Or how is it currently not working???
Give detailed information and more help can be offered
I find all this very easy to do, so don't mind helping out
You might want to fully read this thread as I have already explained a lot of things already here