That is a tricky question.
By default no. K2 does not have a seperate image in listings and items. However if you have some basic coding skills you can achieve this.
What you need to do is:
a) Create a new image-type extrafield for the DJ's (Producer Additional Info group)
b) Read this post on how to render specific extrafields.
getk2.org/community/English-K2-Community/171284-Where-to-edit-K2-after-Item-Fields
c) Backup and open the item.php file located in templates/radiowave/html/com_k2/grid .
Now: replace the following block of code:
<a class="modal" rel="{handler: 'image'}" href="<?php echo $this->item->imageXLarge; ?>" title="<?php echo JText::_('K2_CLICK_TO_PREVIEW_IMAGE'); ?>">
<?php /* <img src="<?php echo $this->item->image; ?>" alt="<?php if(!empty($this->item->image_caption)) echo K2HelperUtilities::cleanHtml($this->item->image_caption); else echo K2HelperUtilities::cleanHtml($this->item->title); ?>" style="width:<?php echo $this->item->imageWidth; ?>px; height:auto;" /> */?>
<span style="background-image:url(<?php echo $this->item->image; ?>);"></span>
</a>
With the code for the extrafield. Some CSS tweaking might be needed. Furthermore you can also replace the if statements for the image with ones that correspond with the extrafield.