The SpongeBob_VoicePack.zip file you have requested: Modifications / Voice Packs / S to T Titles / SpongeBob Voice Pack - 366.17kb is not available. Perhaps try browsing all files for the game Unreal Tournament 2004 and upload any files you want to share or are missing. This is the only information we could locate:
There is nothing worse than having a model without sound files. Therefore here is a SpongeBob voice pack with the few available wav files I could find.