Thanks for your nice comment ^_^ As I'm on hollidays during the mponth of august, I spent 6 to 8 hours by day to work on my project.
For the items you've kept, you still have them until you quit completely the game (and loose everything). But not in the last version of the game (so keep it if you can): you'll start with nothing at all, but you can reach the real end finding and using all the items and solving the end in less than 4 minutes.
And, to bo honest, the sound creation was for me a pure joy to work on ^^ I've made the whole game around graphics, and the graphics around the sounds/music. The audio part was the first thing I've done.
Just a question : have you finished the game ? I wonder if I haven't made too difficult ^^