Supports MP3+G playback; that’s 2 files, a .mp3 accompanied by a .cdg. You'll be able to create your own background by replacing "BG.PNG" with your own image. You'll play songs from the MP3G folder. The songs have to be named m1.mp3, m2.mp3, …mX.mp3 with a corresponding m1.cdg. The ‘1′ will be used as the song number. Alternatively, you can populate a sqlite3 database (kpl.db) which allows you to forgo with the naming convention and store MP3G files in different locations on the memory stick. Note that most MP3G files on the internet don’t have mp3 id tags. The sqlite database has columns for artist names and song titles.

This is a concept beta version with the following features:

Plays MP3 + CDG Format

• Add songs to queue
• Play, Pause
• Skip to next song
• Sqlite3 songs database

Controls:

• TRIANGLE – Show song number input
• UP, DOWN, LEFT, RIGHT – Input song number
• CROSS – Add song number to the songs queue
• SQUARE – Skip to next song
• CIRCLE – Play / Pause

While the readme says “psp slim & lite”, it's been confirmed that its working on PSP Phats with 3.90 M33

Download: http://www.psp-hacks.com/file/1410

*straight from Psp-Hacks.com*