How to pass in a filename from a SQLite database in Android?

I am having trouble figuring out a solution to my problem. I have an ExpandableListView that creates a new MediaPlayer instance when the child view is clicked. Currently, this is done with a hard coded link to the file in my raw folder, but I want to switch it to take the file name from the database, and then use that filename to load the corresponding audio file from the raw folder.

My database is set up something like this:

_id|English|Hanzi|Pinyin|Filename

1  |Hello! |你好  |nǐ hǎo|hello

The cursor is already loaded and fills the ExpandableListView. How do I go about loading this instance of mediaPlayer with the filename in the database, so that every child will load it's own audio file?

    //load cursor
    public void fillData() {
    Cursor mGroupsCursor = mydb.fetchColorsGroup();
    startManagingCursor(mGroupsCursor);
    mGroupsCursor.moveToFirst();

    //Basic ExpandableListView Adapter
    MyExpandableListAdapter mAdapter = new MyExpandableListAdapter(mGroupsCursor, this,
            R.layout.group_item,                    // Group layout
            R.layout.child_item,                    // Child layout
            new String[]{"English"},                // Group fields
            new int[]{R.id.english_text},           // Widget ids for group data
            new String[]{"Hanzi", "Pinyin"},        // Child fields
            new int[]{R.id.foreign_text, R.id.romanization});          // Widget ids for child data
    final ExpandableListView elv = (ExpandableListView) this.findViewById(R.id.shell_expList);
    elv.setAdapter(mAdapter);                         // Set the list adapter



    // Set the listener for child clicks
    elv.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {
        @Override
        public boolean onChildClick(ExpandableListView parent, View v,
                                    int groupPosition, int childPosition, long id) {


                    // Stop the media player
                    if (mediaPlayer != null) {
                        mediaPlayer.release();
                    }


                    // Start the media player
                    mediaPlayer = MediaPlayer.create(getApplicationContext(), R.raw.shi);
                    mediaPlayer.start();
                    return true;
            }
        });