Here's a quote from their website,

DJSP 0.13a - Audio Visual MP3 Player for PSP (Playstation Portable)

Written by: Lok Tai Fung or Andy Fung or DJ Epitome or CooleyAndy (AIM) I personally can't decide which one is best.



DJSP, The premier Audio Visual MP3 player for the PSP.

Here are the features of DJSP:

* 10 different Audio Visuals !!!! (Press Left or Right Trigger to change) **See below for screenshots**

- Energy Chaos, Remixed Chaos, Aqua Space, Particle Dream, Plasma Desuka, 4x Spectras, Circlez

- Cross fading between them [per song, 1 min, 2 min, 5 min, off]

* Full 10-band equalizer support. Allows Volume to be beyond the PSP's limitation. Reduce base, increase, etc...

* Change Display mode by pressing [Cross] in Visual mode.

There are 3 modes: Normal, Suppress Display, and Power Saving (no visuals and uses less power).

* 4 play modes - normal, sequential, random, repeat

* Plays MP3s (any length, could be 2GB if need be)

* Headphone Remote Support

* Fast Forward (Very fast, and definitively faster than PSP's built in mp3 player) and Restart.

* Transparent Windows, displays play time, and other little bits of stuff.

http://www.andyfung.net/djsp/

Download from here