A tweak that will play a sound when the iPhone has finished booting (or respringing)
The most long-awaited feature: Sound Manager! (see screenshots)
Now it has two sample files included. Also, put your files to /var/mobile/Library/StartupSounds and with ANY NAME YOU WANT!
The app will show a message with a change log on first respring. This message will not appear on next reboots/resprings