Thanks to an online audio archive developed by professors at the University of Pennsylvania, recordings of Ezra Pound or William Carlos Williams can take their places on students’ iPods alongside tunes from Better than Ezra or Carlos Santana. Recordings of these two poets’ works are now available free of charge through PennSound, which features about 200 writers and more than 10,000 recordings contributed by poets, fans, and scholars worldwide. The two-year-old site recently acquired rare readings by Pound, some previously unknown. Hearing any poet “makes the poems easier to move into, in some cases,” said Tree Swenson, director of the Academy of American Poets in New York. “Our ears are less logical than our eyes, somehow.” Pound in particular, she said, “is a perfect example of a poet whose tone and phrasing is so distinctive.” While many web sites stream poetry readings, they require an active internet connection. With PennSound, files are downloadable in MP3 format and can be played offline and on portable devices such as iPods, said Charles Bernstein, an English professor and the site’s co-director.