T his process is called embedding a file. If you do not specify a size, the browser will use the default value. If you make it too small, some buttons might be cut out. A wave file cannot be looped. Every browser will react slightly differently to the codes.
Some people compromise by including both codes in their source.
Yes, of course, given three conditions. First, let me know , and offer your URL so that I can keep track of where my music is being used. Second, please credit me where the music appears. Third, provide a link to my e-mail address or homepage so that I can be found by visitors. The policy is usually no.