You can surely remove the tags, but it wont help much if you don't have images and lyrics in idv2, because the tags are normally small, something about 500 bytes, it would be 4 mb of 40 gb (8000 files, 5 mb per file)
Thanks for the help on this one. As I understand it the firmware that is used to manage the files on the player hard disk has a limit to the amount of entries/bytes allocated for file management.
I was interested to hear if anyone has purposely reduces the size of the tag info ie abbreviations in tag information.
I will put caution to the wind and install the 80Gb hard disk. If I encounter limitations I will post them.