As Bob said adding compression will add punch, and if you find it a bit thin and 'boxy' a little EQ boost around 80 - 100hz will add body and a little cut between 200 - 250 hz will take out that 'boxy' vibe.
free VST EQ >>
http://www.mymusictools.com/test_too...q_vst_3383.htm
Free VST compressor >>
www.kjaerhusaudio.com/classic-compressor.php
hope that helps
Mick