Well one idea (and what I have done) is to get an ok speaker set up for the mp3's etc.. then split the sound and run head phones for the the games.. If you are playing a game that needs really good positional sound headphones are x10 better at that anyways.. if the the game is one that positional sound is not big deal, ya could just use the speakers..
errr and by headphones I mean a good pair you really like.. not some cheapy $30 pair.
ya could buy the smallest set of speakers and find some way to mount them to the chair?
I mean that sound strange but no more so then this weird pipe set up I saw one time.. Started out bolted the the desk then it sort shot up and hind the where a chair might be.. Speakers mounted at the end..
cpu speakers being so light he was able to make it out some sort of flex pipe.. Strange.. they were high enough to walk under them too..
Ya know, you don't really need to have the speakers set up in perfect place.. Even sort of behind ya or wall mounted or not evenly apart will still get ya pretty good surround sound.. Errr btu as I said, I'm a bigger fan of the headphones.. Run a set of Sony 7506 pros