Mp3tag cannot write to or export data into files of type .xls (Excel Spreadsheet), which has a binary file format.
Mp3tag can export data into a text file, which content can be arranged in different formats, e. g. TXT, CSV, SSV, TSV, HTML, XML, RTF, CMD, VBS, JS and many other formats as well, because of the basically textual output.
There is no need to export data from Mp3tag to another application just for sorting.
Simply use Mp3tag's list view to sort data per column.
There are many threads in the forum regarding data transfer between Mp3tag and Excel.
The problems are different, language and country dependent.
There are threads with valuable informations about successful data transfer from Mp3tag to Excel.
... german ...
/t/4473/1
... english ...
Export CSV
See also ...
/t/9520/1
/t/10185/1
DD.20120707.1750.CEST
Edit.DD.20120719.1330.CEST