I think he means 'run [IN] the background'
as in 'is the gp2x a multi thread capable system. and the answer is; not really.
though the gp2x hardware is technically capable of multitasking, most applications run in what I like to call selfish mode, they run and they are the ONLY app to run. this includes games, music, utilities, and videos. one thing at a time.
that's not to say it CANT do it, it can, but I think that running multiple processes on the gp2x would actually be hard on resources and slow things down significantly.
so for the time being, Hyperpc, the answer is no.