None, I use my PSP to play MP3's (So 8GB then considering the size of my Memory Stick). But I also use it for movies and the obvious gaming so it's sort of become a universal device I can't live without... like cell phones for more mundane people.
Also, I use a Sony Walkman CASSETTE Player for the hefty amount of CASSETTES I invested in for all those years... yes I took care of them too. Hilariously enough, it was even made in 2005. Consequently, with a male/male headphone cord, I also use my Walkman to record my hard-to-find-on-CD/MP3 tapes to MP3 files... same with my vinyl LPs... then I copy them to my PSP.
