With Converter App, you can convert PPTX files into many other formats:
PPTX to PDF | PPTX to PPT | PPTX to MP4 | PPTX to PNG | PPTX to JPG | PPTX to TXT | PPTX to HTML | PPTX to SVG
→ All PPTX Converters
If you want to keep working with your final MP3, try:
MP3 to TXT | MP3 to DOCX | MP3 to PDF | MP3 to SRT | MP3 to MP4 | MP3 to WAV | MP3 to AAC | MP3 to EPUB
→ All MP3 Converters