All good questions. And all are answered by the brightest tech minds we know in PopSci's monthly "Ask a Geek" feature. Today we bring you a roundup of our favorites, but we know there's more. Do you have a different answer to one of the questions posed to our chorus of geeks? Or maybe a question of your own you'd like to see answered? Sound off in the comments below. —John Mahoney
UPDATE: The geeks answer! Commenter Ted asked about finding something to save audio streams from the Web the same way keepvid.com downloads videos. On the Mac side, there's Audio Hijack, an application that listens for audio generated by any application on your computer (your Web browser, Real Player, etc) and records it to an audio file which you can convert to the format of your choice within iTunes (just remember not to steal copyrighted material!). I've used Audio Hijack, and it's great. For Windows there is Total Recorder, which I haven't used personally but appears to have roughly the same functionality.
For everyone submitting specific computer problems they may be having, we know how frustrating these problems can be, but if it's specific to your computer we probably won't be of much help. Maybe give these other geeks a call?