To resolv, are some changes on components/com_pohcadownload/assets/phocadownload.css near line 279 must be done.
In my case I using images like 50x50 and the changes you see downstairs is working.
In your case it's a question of your images size, play with padding-left and height.
Best result for padding-left and height is image-height + 8 px

Code: Select all
/* icon next to file*/
.phoca-dl-file-box-mod .pd-document16,
#phoca-dl-file-box .pd-document16,
#phoca-dl-category-box .pd-document16{
padding-left: 55px;
background: url('images/icon-document-16.png') 0px center no-repeat;
height: 55px;
line-height: 16px;
}