they talked about it, but said they didn't want to support the video codec that the psp eboots use, i think it's the same for the audio. They said just an animated .gif or so could work, with, i don't know, maybe a .wav file? some one please correct me if I'm wrong, but I'm pretty sure .wav was the audio the wanted to use.
they also said they would make a program to make eboots specifically for psx4pandora (e.g. no video or audio, just an animated .gif and .wav file)