I come to you now, hanging my head in shame, because I can't troubleshoot Linux nearly as well as I can OSX and Windows. Also because what I did was really, really dumb. So here's the deal. I have my PS3 routed through my sound cards line-in port to route it through my nice computer speakers. It used to work fine, but recently I started noticing a good bit of lag between the action onscreen and the accompanying sound. So I did what any good Linux pro would do, I jumped on Google and searched for an answer to my question. ...and then I did the worst thing a Linux noob could do: I listened to the posted advice of an overly opinionated, high strung neckbeard on some random forum. End result, I ended up uninstall Pulse Audio to install ALSA, realized that ALSA didn't work for my line-in for reasons unknown, tried reinstalling Pulse, and now? Now I don't have sound. Some way, some how, I've broke my entire sound subsystem. I don't even have my little speaker volume doohickey on my taskbar, which is the most tragic thing of all. I've searched through Synaptics, and it looks like I have the proper libraries installed (both Pulse and ALSA are checkmarked at least), but something isn't firing. I'm missing some step, and I don't know what. FYI I'm using ElementaryOS, which is based on Ubuntu 12.04. It's got basically the same underpinnings as it, so just about anything that works in Ubuntu will work here. So my question is, how can I reinstall Pulse and Alsa to factory defaults without reinstalling the entire OS? I've been working on this for a day and a half now, and I'm coming up empty. I could use some help. And yes, I should've known better. This is a total lapse in judgement on my part.