i have done that HDW...and do have an ipod i dont use for much..

the thing that kinda throws me through a loop with the mp3 thing is finding the sound you want to play at that time...and making the sound play long enough so im not sitting there clicking buttons all night. though, no batteries, better sound, and custom sounds would be nice...and i could always buy sounds CDs and rip them and put them onto the player...but still dont know how id search for the sounds i wanted and have them play long enough...