2 things you may allready know:
1: Filming games IRShell will run.
Easy if you hold down the note button it will take screen shots every 0.2 seconds which you can compile into an animated gif. See my Wipeout avatar.
The quality is BMP quality this is just 8 colours to make it small enough to use as an avatar.
2. If you put the tracks you want to play in a folder but leave one mp3 file outside the folder select the folder and the track then tell the track to play. It will play throught the entire folder then play the track outside the folder.
useful if you use you PSP as an mp3 player whilst playing wipeout and don't want to change to the next 10 tracks in the middle of a race.