All files are in .wav format to use as computer alert sounds, song breaks on your iPod, or ringtones.
I tried to cover all the most famous lines; if there are any I forgot from these two specific episodes feel free to request in the comments.
Servicey: For more Castiel-related .wav sounds, click the "Audio Clip" tag in this post.
IMPORTANT: If there are any links here that are dead, simply comment and let me know what you need and I'll re-upload.
4x01
Dean: "Who are you?"
Cas: "I'm the one who gripped you tight and raised you from perdition."
http://www.zshare.net/audio/756530749e650ca9/ Dean: "Who are you?"
Cas: "Castiel."
Dean: "Yeah, I figured that much. I mean, what are you?"
Cas: "I'm an angel of the Lord."
http://www.zshare.net/audio/749833180f5ab605/ Cas: "What's the matter? You don't think you deserve to be saved."
http://www.zshare.net/audio/7565311018286d62/ Cas: "This is your problem, Dean. You have no faith."
http://www.zshare.net/audio/7565310983d11802/ Cas: "We need to talk, Dean."
http://www.zshare.net/audio/75653107cea25ec8/ Cas: "Good things do happen, Dean."
http://www.zshare.net/audio/75653108cea25ec8/ 4x02
Cas: "Our numbers are not unlimited. Six of my brothers died in the field this week. You think...the armies of Heaven should just follow you around? There's a bigger picture, here. You should show me some respect. I dragged you out of Hell -- I can throw you back in."
http://www.zshare.net/audio/756533368157c124/ Cas: "You should show me some respect. I dragged you out of Hell -- I can throw you back in."
http://www.zshare.net/audio/7565333419a6907a/ Cas: "You should show me some respect."
http://www.zshare.net/audio/756533326dfdfe44/ Cas: "Read the Bible. Angels are warriors of God. I'm a soldier."
http://www.zshare.net/audio/756533358157c124/