I have been using this now for about 2 months. Sometimes when I open Amplitube 2, the sound is all distorted. I can usually fix this by changing the sampling rate on the setting menu and opening and closing the software again. There is something funky about the software. I'm still trying to figure this part out. You should have the recommended half gig to run the software. Once the sound is working, I have no complaints. The sound is really good thru the speakers on my computer and the supplied patches are great. It works great with my bass and guitar. I find the loop feature a big help to figure out how to play some of the licks in songs. Using the mouse to control the amp settings is also a little funky. I would buy this again if I had to do it all over. It's a very easy way to interface your guitar to your mp3 files and play along with them.