The Spinitron Labeler attempts to find the record label for each item in your data and emails you the result.
Copy and paste your data into the "Playlist Text" field from iTunes, Microsoft Excel or similar, a text editor, etc. The data fields must be "tab-separated" (TSV file format), which is what you get with copy-paste from iTunes, Excel and so on. Fill the rest of the form, solve the captcha and click "Next". Confirm the job on the following page.
The playlist text may be quite large but the longer it is the slower the job.