Would this work?

<dax:if(compilation&#124;&#124;rare&#124;&#124;sou ndtrack&#124;&#124;single)>
<p><span class="proplabel">Special Info</span>:
<span class="propvalue">
<dax:if(rare)>
Rare
</dax:if>
<dax:if(compilation)>
<dax:if(rare)>/</dax:if>
Compilation
</dax:if>
<dax:if(soundtrack)>
<dax:if(rare&#124;&#124;compilation)>/</dax:if>
Soundtrack
</dax:if>
<dax:if(single)>
<dax:if(rare&#124;&#124;compilation&#124;&#124;sou ndtrack)>/</dax:if>
Single
</dax:if>
</span></p>
</dax:if>