Andy Fung just released a new version of his popular DJSP homebrew app for PSP.... but its not known as DJSP anymore....
PSPAdvance is the latest version of the popular DJSP Media Player for PSP. It now allows you to create stunning effects from MP3 soundwaves, play MP3 Audio Games and manipulate visualizations. PSPAdvance also features easy
PC to PSP syncronization, 1-click file transfers and an iTunes-style content network for your PSP.