It takes album from the playlist or folder name. My PowerShell script, TagRename, splits the filename on a dash ( - ) to get artist and title. How would the files have to be named for that to work correctly? I'm not sure I've got my head around it.

Even if you converted that way and then used MP3Tag to check the tags are okay. I'll post back if I find out foobar2000 can do it, although sneaker's method might be even better. I won't have time till tonight but I'll research it some more, or ask in the foobar2000 forum. It's easy enough to automatically copy tags when converting and the TagBox component (I have it installed but only use it for basic stuff as I prefer Mp3Tag) can create tags from file names too but I haven't found a way to do it as part of the conversion process. I haven't found a way to make the whole thing a one step process with foobar2000 yet. The columns (File Name, Artist, Title etc) can be reordered by dragging them and they can be re-sized, which is worth doing to make the columns you need easy to see if need be. Reading and Downloading Mp3Tag to try it out now It might seem a little confusing at first but once you get to know it and have it customized to your liking, I think Mp3Tag will make your life much easier. There's a few different 3rd party add-ons for foobar2000 dedicated to improving it's tagging functionality so out of curiosity I'll have a look later to see if one of them will do what you want and report back if I discover anything useful, but unless someone has a better idea, give Mp3Tag a spin. I know it's not exactly what you want but once you get to know it Mp3Tag makes renaming and/or tagging large numbers of files quick and easy. It can batch copy tags from one group of files to another (even different file types). It has a right click 'action' menu that can automatically remove data from specific tags or convert the tags to lower case or sentence case. It can open and tag many file types, not just MP3. You can enter or change a field such as Artist for multiple files by highlighting them, typing the artist name into the template section on the left, right clicking on the files and selecting save. Mp3Tag lets you manually batch tag MP3s too. What if the title contains four words and the album name consists of three words? How would a program know what's what? I suspect using only a space to separate each field as per your example would be a bad idea. You can create presets for the re-naming/tagging function. You can open a bunch of MP3s and automatically batch create tags based on their file names, or batch rename them using the tags. Have you used Mp3Tag? It's awesome for that kind of thing once you get to know it. It shouldn't be hard to create them first, although I'd be inclined to convert the files to MP3 and then tag them. Generally the idea would be to copy any existing tags. I'm not sure about using the input file names to create tags to be added to the output file. How does an automated process know what the change should be? ie How would it know to change 'Smith Project 123456.m4a' to 'Smith Joe 123456.mp3'? Your first example has an m4a with a particular title, and an output MP3 with a slightly different title.

Mp3tag case conversion