Well, maybe there's a bug with Audacity and your soundcard and drivers. Maybe you could try uninstalling and reinstalling it?
But if you're looking for a new program, I highly recommend REAPER. It's free to try (last time I checked) and it's very powerful.
Also, if you're REALLY looking for a new program, and if you have cash to burn, you'd probably have a lot of fun with ProTools. I use it at college, and it's pretty nice, I guess. Takes a lot of system power, but can do all kinds of cool stuff. Beware, it's fussy with anything other than a Mac though.
But if you're looking for a new program, I highly recommend REAPER. It's free to try (last time I checked) and it's very powerful.
Also, if you're REALLY looking for a new program, and if you have cash to burn, you'd probably have a lot of fun with ProTools. I use it at college, and it's pretty nice, I guess. Takes a lot of system power, but can do all kinds of cool stuff. Beware, it's fussy with anything other than a Mac though.