Can anyone help me with GBAMusRiper?

Trying to rip some sounds out of a game but all i seem to get is the background music and instrumental type ones.

I'm not sure if it finished fully ripping it though. Rips about 177 files and then gives me this error

Code:

Dump complete, now outputing SF2 data...Exception in thread "main" java.lang.Ind
exOutOfBoundsException
        at java.io.FileOutputStream.writeBytes(Native Method)
        at java.io.FileOutputStream.write(Unknown Source)
        at java.io.DataOutputStream.write(Unknown Source)
        at gbaMus.SMPLSubChunk.write(SF2Chunks.java:397)
        at gbaMus.SdtaListChunk.write(SF2Chunks.java:137)
        at gbaMus.SF2.write(SF2.java:86)
        at gbaMus.SoundFontRiper.main(SoundFontRiper.java:122)
        at gbaMus.GBAMusRiper.main(GBAMusRiper.java:191)

The game is Ueki no Housoku - Jingi Sakuretsu! Nouryokusha Battle (J). I'm trying to get the attack sounds out of it (Like whne ueki punches, or does a special)