Unused Graphics
Various unused graphics can be found in DATA/FILEDATA.BIN on the game disc.
Learner song wheel graphic, a similar graphic was used in DDR 5thMix but was not used in DDR Party Collection. It was used in DDR 5thMix to denote that the BASIC/LIGHT steps were two (2) footers or under in difficulty. Interestingly, this graphic has been recoloured to refect the colours of DDR Party Collection.
Arcade machine saved Edit Chart slots graphic that normally in the arcade is shown above the songs banner. If the arcade cabinet had PS1 memory card slots, the arcade owners could choose to save up to two edits per song onto the cabinets flash memory. This system was never implemented in the console versions as you could have many more edits and access them all from the music select screen. Even though it has never been used in the console versions of the game, these images have been recoloured to suit DDR Party Collection.
Sort series from Music Select that was used in DDR Extreme - interesting to note it was re-coloured for DDR Party Collection but went unused.
Leftover series folder names from DDR Extreme. Since DDR Party Collection was a collection of songs (mainly the Dance Mania licenses) that were not included in DDR Extreme for PS2 it may have been possible that a similar Series sort from the prior game could make a return in DDR Party Collection. Seeing as though these titles, the sort image and the original Genre banner that was used in DDR Extreme as shown below, it certainly seems likely. However, the font has not been altered to reflect the DDR Party Collection font.
As mentioned above, this is an unused Genre banner from DDR Extreme unlike the Sort Series icon though, it has not been changed to suit the style of DDR Party Collection, so this as well as the folder names above may have just been kept as a placeholder while they were deciding what to do.
Unused memory card icons that were used in the Dance Dance Revolution Arcade machines but were not featured in the Console versions. Similar to the other graphics in this list, they too have been recoloured for DDR Party Collection.
This icon is a strange holdover from the Arcade versions of DDR. It is used in the arcade versions to show that the Joint Premium setting is active. Since is hasn't been recoloured at all and on the image it's associated with all the other graphics have been coloured, it appears to be just part of the graphic that was used in the DDR Extreme Arcade version and was kept to keep the graphic the correct size for the code.
An unused step judgment graphic relating to freeze arrows.
Left over song banner/titles, these have carried over from DDRMAX2: Dance Dance Revolution 7thMix. These graphics are also found in the c/s previews for DDRMAX US, DDRMAX2 US, and DDRMAX2: Dance Dance Revolution 7thMix
An unused banner dummy graphic, whose purpose is unknown.
AM-3P 
