if you were to get a sound card... i say get the sound blaster 5.1 live which is roughly only 40 bux tops... superb sound for mp3`s , gaming .... etc you name it... i have one and it runs like a dream...
but if you were to get a top of the line stick with a creative labs sound blaster model...
also get your self a better heatsink fan...
http://www.newegg.com/app/ViewProductDe ... 036&depa=0
my friend has this and he runs at like 85 degrees F and like only 98 when maxing out his graphics...thats when he doesnt even have air condition and yes get some thermal grease...