Client experience

Hello,
I’ve got my first client and have had to build an MP3 player for his web page and I’m wondering how much to charge him.

It streams in external MP3’s, XML.
Because it was my first time building, debugging and testing it, the total hours worked were about 10.

I have also worked on javascript code to launch the player.

Anyone getting paid for doing flash for clients?How much should I charge?

Best,

BRb