content: Bought a Zune 4gb could not use ear buds or headphones. Everything is made for ipod I could only find altec lansing im414 dock station it wasn't practical for portable use. Glad I read all the reviews especially about opening the package. You really can slice your fingers off. Take your time when you open it.It's pretty loud from 1-20 scale you can only use a 5-7 in an ofc enviorment. Fills a 20 x 20 room well. 4gb Zune has no eq but if recordings are base heavy you will be ok. Works A+ for Classical music B + for Jazz. Fits in my small shoulder bag very nice and has a carry bag. Looks really cool on my table. Jack location is in the rear should be on the side. Would really improve the product if a center sub wofer was installed.