this sounds not to be superficial, but under linux, it’s quite easy to archieve. there are several projects which make you control a broader or more narrow set of functions from anywhere around your linux machine with your cellphone. for all of these helpfull packets of software, you only need a bluetooth-enabled cellphone and a bluetooth-device in your computer, that is supported by linux drivers (shouldn’t be too hard to find). you can get an overview of programms for connecting your mobile via bluetooth to your computer over at tuxmobile.org.
after reading this helpful article on the subject, i tried different solutions (i.e. bluepad) and got stuck to remuco. It is a small tool to interact with all mainstream mediaplayers for linux. the list of already supported players is quite impressive: