my speakers have finally broke. the connection from the speakers to the subwoofer on my logitech z-340 has become so loose that when i plug it in all i get is a really loud hum. anyways, im in the market for another 2.1 system but i only want to pay around $50. any suggestions? i am willing to pay a bit more if the system has some nifty features such as a remote or has really great sound.