Modification of a Wordpress theme

I have a wordpress theme on which I need some modifications done. The website is a music blog that has an integrated audio player. Everything is almost completed except a few things I need to fix. ** Please note that I have done another website with almost the same features. You can most likely use some code of the other one for this project** Here's what needs to be done : 1) I have a page on which I display all the tracks (they have their own custom post type). On top of this page, I'm displaying a list of all the categories for this custom post type. I would like that if you click on one of the category item, you get the same page, but with only the tracks under this category. 2) On the home page, I have 3 different fields. Each field would link to a different page. 2 of them are select fields that have a dropdown menu that displays the category for the custom post type "track". I would like that when you select one, it automatically loads the same category page mentioned in #1. The other one is just a search field that should link to the search result page. 3) On the home page, I have a featured post grid on which 5 featured posts are displayed. I would like to add a next/previous button that would load and replace those 5 featured post by 5 new. 4) Add a different colour to each post category label. When the category of the post will be displayed, each one of them will have a different colour 5) In the sidebar, I'm displaying a list of all the tracks (custom post type) that I can filter with a dropdown menu that has categories. Right now I'm correctly displaying the track itself, but instead, I need to display the tracks unique shortcode (each one has one stored). You'll need to replace the track title by it's shortcode. Also, the filters (categories) on top aren't correctly filtering the sidebar content. 6) On the page mentioned in #1, I'm currently displaying 15 posts at the time. I would like to load via AJAX 15 more tracks when we get to the bottom of the page (infinite scroll). ***Please note that this this template already has an infinite scroll option for another page template. You can easily use this code for this page*** 7) This is a simple code fix. The audio player currently works fine. the "play/pause" button as well as the "previous" button works well, however, the "next" button doesn't work. I did most of the work on this, but I did an error somewhere that I can't seem to find (I'm not too good with javascript) 8) I have a shuffle button in the player. Currently it does nothing. I would like that when you click on it and activate shuffle, It loads a random track (custom post type) in the player and play it. Once done, it loads another random track, until you deselect the shuffle button. Please make sure to read all my requirements before bidding on this project. Also, just let me know if you need additional information on this project and I will gladly provide you further details. Thank you, Dominic