Making Music Loops

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I made a intro loop of Kevin Macleod-Ghostpocalypse2,the call but when I tested it in Blockland I couldn't see it or it's checkbox.Please help.It may or may not be a terrible loop but if you can fix this then:http://www.mediafire.com/?2nzhyocnijn
Thanks

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Sorry for the double post and sorry for the not functional URL:http://www.mediafire.com/?2nzhyocnijn

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(Triple bump)Already solved.