Complete a game launcher that plays audio files

Need to complete a code to make a private game launcher. I started it with a friend but now none of us have time to complete it. The launcher basically does the following (see attached image for better understanding or check this link [login to view URL]): When user presses the "play" button: 1. If "activate Intro Theme" is checked" (it is by default) it: - Plays a random song from a listbox (if there's no items in the listbox, it stops the execution and asks the user to add them) with volume1 - if "play selected theme" is checked: Plays a selected song from the listbox with volume1 *the user adds a folder or songs to the listbox and these are saved until he deletes them *if there is input in the "intro delay" field, it sets off a timer before playing the song *Volume 1 is by default at 75% 2. Launches the game (if "High Priority" is checked, it launches it with it) 3. Once the "Intro Theme" ends playing, it plays continually random songs from a folder (with volume2 and a delay that's is set in a ), unless "activate game soundtrack" is unchecked (by default checked). *the folder with OST sounds comes with the launcher, so it should be constant (f.e. /Launcher/OST) *The sounds are played with a default delay between them of 40sec., which can be changed in the "delay between tracks" field. *Volume2 is at default 10%. 4. Closes with the game/app closing. ---------------------------- We made all the basics work, but what's left, and where we need help with is: - Making the launcher play a random song from the list once with delay1 and Volume1 (we were testing with a .wav dll, but it should be one that plays .mp3, and .ogg for the OST if possible) *Creating an array from ListBox, then selecting a random item from that array and playing it with the delay1 and volume1. - Making the launcher play a random song continually with delay2 and Volume2 *Creating array from contents of OST folder, then selecting random file from that array and playing it (in an infinite loop with delay2 and volume2 till the program closes) (as I mentioned before, the files are .ogg which are smaller than .mp3) - Making the program close when game closes (if possible)